Paul S Comment to MP

Paul Diastolic Pressure is the pressure when the ventricles are relaxed.

JoeM's Muddiest Point

My muddiest point is the function of each neuron.

Muddiest Point

My muddiest point is which neurons do which functions

Muddiest Point

My muddiest point is on the circulation of blood in the heart. Is there anything that can help me remember which veins and arteries take blood to and from the heart and lungs. THANKS

Sara

Muddiest Point

What happens in highblood pressure?

Muddiest Point

My muddiest point is difference between depolarization and polarization and when each occur.

Muddiest point

what are the 3 types of of neurons and what are there differences.

Muddiest Point

my muddiest point is how do neurons and synapses work?

Muddiest Point

difference between depolarization and polarization?

Muddiest Point

My muddiest point is what is the difference between polarization and depolarization.

Muddiest Point 5/13

My muddiest point for this unit is recognizing the antigens and antibodies reactions involved in transfusion reactions and predict which type of blood (ABO system) can be the recipient and donor in transfusion. I am kind of confused how you figure that out.

Muddiest Point

I don't understand the difference between depolarization and repolarization and when each is supposed to occur.

Muddiest Point

My muddiest point is the neuron! I do not understand the differences between the three types of neurons.

My muddiest point

My muddiest point for this unit is understanding the neuron depolarization and repolarization that happens in the neuron when the transmitting is happening.

GabbyM's Muddiest Point

My muddiest point for this chapter is what the neuron does when it receives an impulse. I don't understand the whole depolarization and repolarization. Thanks!

Muddiest point

My muddiest point is what systolic and diastolic pressure is. ThanksMudfiest

Our Little Libby!

muddiest point

my muddiest point is where does the electrons come from between light independent and dependent cycles

Muddiest Point

where do the electrons come from in the photosynthesis process, and where do they go/what do they do?

funny videp

http://youtu.be/MtN1YnoL46Q

Muddiest Point

My muddiest point is can a gymnosperm have flowers?

Muddiest Point

Can you please tell me what the role of ATP and electron carriers (NADP+) are in photosynthesis?

muddiest point

My muddiest point is telling the diference between a monocot and a dicot plant. what are the main diferences?

Muddiest Point

My muddiest point for this unit is on capillary action. I am confused on what it is.

Thanks

Muddiest Point 3/20

My muddiest point for this unit is number 9 on the objectives page. It says, understand life cycle of angiosperms including the process of double fertilization and seed formation. (pollen tube, polar nuclei, ovule, endosperm). I know that angiosperms are plants that flower, but I am confused on this whole idea.

3/20 SCRIBE

Today in class we took our lab quiz. After that, we discussed Pollination (Self and Cross). Self pollination occurs when the anthers of the flower are taller than the stigma. The pollen falls onto the stigma and creates a long tube to the ovary. Cross pollination is when wind or some other factors carry one plant's pollen to another plant's stigma. Homework: National Parks projected submitted to Mrs. Stein by 7:30, Read 24.2, Muddiest Point, Comments by Thursday, POD quiz Thursday, Test Friday, and Readings on UP 3.

The next Scribe will be: PeterS

JoeM's Muddiest point

My muddiest point is how to tell what is a stem and what is a root.

SCRIBE 3/19

In class on 3/19/12, we reviewed cellular respiration in a cell, as well as transpiration and perspiration. We also worked on UP 41-44 towards the end of class. We went over the differences and similarities between roots and stems, such as the Vascular Cylinder.We also went over the differences between monocots and dicots. The homework was to finish UP 41-44, study for the quiz, finish up our National Parks projects, and study for the test on Friday! The next scribe will be Joey!

GabbyM's Muddiest Point

What is the function of a cortex in a root? Also, what is the function of a vascular cylinder? I know that if there is a vascular cylinder, it is a root, but I don't know the function of it.

Muddiest Point

My mussiest point is telling the difference between a moncot and dicot root. How can you tell the difference between the two?

My muddiest point

My muddiest point in this unit is the importance of pollination, and seed dispersal

Scribe post 3/13/12

Today in class we started a lab on pages up 25-32 with the fruit sheet we got in class. We will be working on this lab tomorrow and it will be due on friday. our other homework was to read chapter 23.2 and to skim chapter 23.3 in the text book. Mrs. stein said that these readings are to be used as a reference this week for our lab and our objective. There will also be a quiz next tuesday on our leaf lab, the lab on pages 25-32, and on a flower lab we are going to do.

The national parks project is due next wednesday

3/12/2012

Today in Mrs. Stein's class we received graded work. Mrs.Stein went over the piment lab the went over what we were doing with the data analysis(up 73-76). We also reviewed photosythisis for tommorow's quiz.

Scribe of 3/8/12

Today in class-
1. First thing we did was get stamps on our homework which was UP 67+68
2. Next we started a CHROMATOGRAPHY LAB!
3. Lastly we talked about photosynthesis

In class today we did a Chromatography lab (UP 69-72). The goal was to try and find what pigments can be found in the different colored leaves. These are the pigments we saw instantly in the spinach leaf.

And after we let it sit in rubbing alcohol, it looked like this. These were are all the pigments that we were able to find in this leaf.

Are Homework for tonight is:

1. Research for your group projects

2. Finish the Chromatography Lab (UP 69-72)

3. UP 81-85 with section 8.2 and 8.3 (or you can do cornell notes)

TOMORROWS SCRIBE WILL BE ___________?

Class on March 7th, 2012

Today in class, we discussed photosynthesis, the structures that make up a leaf and their functions, and energy.

The plant of the day were "Living Stones" or Lithops lesleie

-Succulent - plant which had the ability to store water

-Two fused leaves with few stomata, modified to prevent evaporation

-Mimics the color and appearence of rocks-less obvious to foraging animals

-Produces yellow or white flowers

-Native to South Africa and Nambia

Plant structure were reviewed, key structures include...

-Upper Epidermis

-Vascular Tissue (water transport tissue)

-Spongy Mesophyll (cells are loosely packed to allow easy gas exchange!)

-Cuticle

-Palisade Mesophyll

-Stoma

-Guard Cells

-Lower Epidermis

We discussed energy, specifically the questions on page 61 of the unit packet.

Homework:

-UP 67-68 (Due Tomorrow)

-READ 8.2 and 8.3 with... (Due Friday)

+UP 81-85

OR

+at least 2 pages of well-done cornell notes

Class on 2/24 and 2/25

Today in class we looked over the two plants of the day. The first one we looked over was the VENUS FLY TRAP. The second one we looked over was the BASEBALL PLANT.

We went over the 4 characteristics of the plant kingdom.

1. Eukaryotic

2. Photosynthesis, autotrophic, and contains chloroplasts.
3. Cell wall with cellulose2. Photosynthesis, autotrophic, and contains chloroplasts.

4. Multicellular

We also talked about the phylogenetic tree. The Green Algae and the Mosses have to live in moist environments due to the fact that they do not contain true - water conducting tissues.

We also went over our quiz.

Things plants need to survive.

1. CO2 for photosynthesis.

2. water for photosynthesis.

3. sunlight (energy)

4. minerals (nitrogen)

5. O2 for cellular respiration!

- Plant's mitochondria get glucose from photosynthesis.

Challenges for plants moving from water to land.

1. The ability to obtain water some way.

2. Prevent from dying due to direct sunlight

3. REPRODUCTION

NEXT SCRIBE WILL BE PETER FOX

Muddiest Point

I am confused what the ecological, economic, and humanistic importance is to invertebrates and the ecological, economic, and humanistic aspects of vertebrates.

Middiest point

My muddiest point is that I still do not understand the difference between Agnatha, Chondrichthyes, and Osteichtyes.

Class on Thursday, 2/23

Today in class, we worked on a lab called the General Classification of Vertebrates on pages 41-42. In this lab, we observed many vertebrates which were preserved in jars and we used the identification key in the lab to figure out which kingdom, phylum, and class that vertebrate belonged to. At the end of class we just watched a bit of a video about reptiles.

Our only homework for today was to comment on a Muddiest Point, due Tomorrow. Also study for our unit test on Monday! Remember that the TV add is due Tuesday, the 28th.

Also we had a sub today, so we didn't hand in our homework on pages 54-55.

KEVIN will be the next scribe

Muddiest point

My muddiest point is the difference between chordates and vertebrates

Muddiest Point- PatrykS

My muddiest point is understanding: Humanistic importance of invertebrates...I dont understand the concept well enough.

Muddiest Point

what are the differences between the classes of fish, and what are example of each?

JoeM's muddies point

My muddiest point is the difference between a vertabrate and a chordate.

Scribe 2/22

First, we handed in our homework which was lab pages UP30-31. Then, we learned about the animal of the day. Today, the animal was a narwal. It belongs to the mammalia class. A narwal is a type of white whale and it has a "unicornlike horn" on its head. Nobody knows why it does, but one theory is that it uses it to joust with other narwals. After, we took our quiz on the vertebrate chart and we were allowed to use our charts. Next, Mrs. Stein went over notes with us. Here are the notes:

Phylogenic Trees

- shows evolutionary relationships

Embryo Development

- protostomes: mouth develops first

- most invertebrates

- deuterostomes: anus develops first

- chordates, echinoderms

Body Cavity Evolution

- coelom: body cavity lined fully with mesoderm

- supports internal organs and movement

- acoelomates: no cavity

- pseudocoelomates: cavity partially lined in mesoderm

- roundworms(nematods)

- coelomates: cavity completely lined in mesoderm

- annelids, mollusks, humans

Chordate characteristics

1. Notochord- supportive rod thru the dorsal side

2. Pharyngeal gill slits- present @ some point in development

3. Dorsal hollow nerve cord

4. Tail

After we finished the notes, Mrs. Stein explained the homework and wevhad a little time to work on it.

HOMEWORK:

1. Test Monday!!!!

2. Muddiest Points due by TONIGHT!

3. Muddiest Point Comments due by Friday @ Midnight! And yes they are mandatory. They are not optional this time!!!

4. Finding Oddball UP54-55 due TOMORROW

5. TV Ad due 2/28

NEXT SCRIBE IS ANDRIJANA!

Muddiest Point

My muddiest point is the difference between chordates and vertebrates. How can all vertebrates be chordates, but not all chordates be vertebrates?

Muddiest Point

My Muddiest point is what animals are in the aves section?

Muddiest Point

My muddiest point is on the whole invertebrate section. Any key characteristics that are very helpful for EACH group that could help me distinguish one from another.

Muddiest Point 2/22

My muddiest point in this unit is the humanistic and economic importance of invertebrates. What are those again?

my muddiest point

My muddiest point this unit is the "Humanistic importance of of invertebrates". If you can help explain this that would be great.
Thanks,
Paul Salay

Muddiest Point

My muddiest point is on the body cavity. I am confused on coelomates, acoelomates and psuedocoelmates.

Thanks!

SCRIBE 2/21

Today in class we started with Animal of the Day #5, which was the Frill-Necked Lizard. This animal is in the class Reptilia and is sometimes called the "Frilled Dragon". Also, this lizard runs bipedally and is currently endangered. We also got our Invertebrate Quiz returned and went over questions that students had.

In class we also did an Arthropod Lab. During this lab we observed preserved items. The three items that we looked at were a grasshopper, a crayfish and a spider. While observing we completed a chart on the characteristics of these items.

For homework tonight you should finish the lab, UP 28-31 and complete your PINK vertebrate chart. Also, post your muddiest points on the blog and be sure to comment! There will be a QUIZ tomorrow on your pink chart, you will be aloud to use the pink chart on the quiz!

Next Scribe: Gabby!

Muddiest Point

My muddiest point in this unit was understanding the difference between the 3 groups of fish: Agnatha, Chondrichthyes, and Osteichthyes. Thanks!

GabbyM's Muddiest Point

My muddiest point for this chapter is what is the humanistic and economic importance of invertebrates. Thanks!

Scribe 2/17

The first thing we did in class on Friday was turn in the homework that was due. Then, we took the invertebrates quiz. We were allowed to use the green chart that we filled out. After everyone finished the quiz, we went to the back of the room to finish the labs we were working on. There were two different labs that we had to do. The first was in the UP packet, pages 13 and 14. The second lab was in the UP packet, pages 19-27. Pages 13 and 14 were looking at 15 jars with different invertebrates in them. We had to then find out what phylum the organism was by looking at it, then using the DICHOTOMUS KEY on page 13. The second lab was spread between all of the lab benches. There were 8 different stations with several things to look at and find out. In pages 19-27 there were multiple questions that you had to answer according to the different stations. (I can't put pictures on here, cause something is wrong with my computer) Some pictures that i took were of Starfish at station #7, molluscs at station #6, and phylum porifera at station #1.

**Homework:
1) Invert Profile (UP 3 and 4) due Tuesday

2) Chordate Chart (Pink chart) due Wednesday

3) Work on TV ad due 2/28

***The next scribe will be: Sara***

Scribe 2/16

  Today in class we saw a video about The Dumbo Squid   It is a squid with ears or flappers on its head to help move the squid  and it is In the phylum Mullsca It lives in underwater in deep water. Here is  the video we watched in class .http://www.youtube.com/watch?v=fDxBVZhZZwI after that we talked about our Classification of invertebrates lab UP 19-27 how we do it and what we can do. there were some animals that we could touch and hold Bess bug and the millipede in the arthropoda station. there were 8 stations  porifera, cnidaria, platyhelinthes, nematoda, annelida, mollusca, echinodermata, and arthropoda. we did the lab for the rest of the day and the green invertebrates chart is due tomorrow.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Scribe 2/15 Wednesday

In class Today we started to talk and discuss animal of the day Axolotl  this animal is an amphibian and the strange part is it does not go through metamorphosis or doesn't change into a land dweller hers is the Cool AWESOME Video  http://www.youtube.com/watch?v=MxA0QVGVEJw after that we discussed the quiz and we did a little review of the basic taxonomy specifications.  After we reviewed we did the Shark Key worksheets it was UP(9-12) we were suppose to use the key to figure out the name of the sharks. homework finish the shark key and 26.1.

Muddiest Point- PatrykS

My muddiest point is what is the difference between Lanmarks and Darwins theory

Joe M's Muddiest Point

I'm confused about how genetic drift works. What is the concept of it?

Muddiest Point

what is the difference between Darwin and Lamarks theories

Muddiest Point

I kind of do not understand what co evolution and convergent evolution are.

Muddiest Point

I do not understand the "similarities of embryos, homologous structures, vestigal structures, and biochemical similarities"

GabbyM's Muddiest Point

My muddiest point for this chapter is the difference between relative and absolute dating.

Muddiest Point

The thing that i am most confused about is the difference between Darwin and Lamark's theories.

AndyD Scribe Class 2-6-12

Today we went over and Reviewed Evolution and Half Lifes!

To review half lifes we answered a question on page 29 of our unit packet (question B) this is also a great source of reviewing for Half life problems for the test on thursday! We then went over some class notes which then led us to beginning and almost finishing our labs in which we had to measure an compare the Jaw width and the Diameter of the brain capacity of a 1.Gorilla 2. Australopithicus (Lucy from the bio day movie) 3. Human. While doing the lab we had to fill out one of the pages between 42-47 that asked us to compare all of the 3 skull structures. After that you had to compare the Jaws with the teeth and the animals pelvis's. The data helped us understand and compare how each kind of organism that developed from that one ancestor that connected apes and humans.

Homework-

1. Finish Up 42-47

2. Read 26.3 with Cornel Notes or Check My Understanding Strategy.

Scribe 2/3/2012

SCRIBE POST!!!!!!!!!

Today in class we talked a lot about Half Lifes.

Which is the time period it takes for a certain substance to decay by half.

We also went over a few half life problems which i was struggling with a lot and so were others in the Class.

To help incorporate our lesson with half lifes we did an M&M lab---------------->

in which we had to count out 100 M&M's and then place them into a cup and shake for 10 seconds and pour the M&M's into the paper plate and all the M&Ms with the M facing up were to be eaten and then we would repeat the process shaking the M&Ms and adding 10 seconds onto each time we shook the container. After we finished with the lab we were given the right to eat the M&Ms and then begin working on the

HOMEWORK-

Finish UP 31-32 Use LINE GRAPH! NOT BAR GRAPH!

AndyD's Muddiest Point

My muddiest point is on the difference between Darwin and Lamarks theories.

Muddiest piont OJ

My muddiest point is how to do half live problems

Muddiest point

My muddiest point is what the differances between darwin and lamarks theries were?

Muddiest Point 2/7

My muddiest point is all about Darwin. What was his theory? What is the concept of "survival of the fittest" and "descent with modification?" I am kind of confused with those.

Thanks,
Jessie

Muddiest Point- Sammy K

How does Photosynthesis and aerobic respiration have an impact on the process of evolution?

My Muddiest Point

In this unit I am having trouble understanding co-evolution and convergent evolution, and their relationship with the modern evolution theory.

Thanks,
Paul Salay

Muddiest Point

My muddiest point is the difference between punctuated equilibrium and gradualism. I don't understand the difference between them, and the difference between their graphs.

Muddiest Point

My muddiest point in this unit is understanding why the anthropoids and the hominoids are two separate classes, since they are both primates. Can someone please explain?

Thanks!
-Andrijana

Scribe 1/31

Today in class we reviewed Darwin and Lamarck in UP 13.

Question 1 - Mutations and genetic recombination are responsible for variations among offspring. Answer: neither, because no body knew about DNA at this time.

Question 2 - There is a struggle for existence among organisms. Answer: Darwin only because he believed that organisms compete and only the fittest will survive.

Question 3 - Modern giraffes are descendants of short-necked ancestors. Answer: Lamarck only because he believed in acquired characteristics.

Question 4 - Two mice whose tails hab been cut off should produce offspring with no tails. Answer: Lamarck only

Question 5 - There is a tendency towards overproduction in nature. Answer: Darwin only because the species overproduce to make sure they pass down their genes.

Question 8 - If you lift weights, your children will be born with strong muscles. Answer: Lamarck only.

Question 14 - All organisms have an inborn urge to better themselves and become more fit for their environment; thus birds developed wings because of this urge. Answer: Lamarck.

We also completed Lab 38, which was based on eveidence for evolution. There was questions about vestigial structures, comparative embryology, and we also colored a picture of different animals bones.

Scribe 2/2

Homework:
1) READ 19.1 (Skip Pages 544 and 545).
2) Unit Packet 33-36
3) TV Ad on FEB 28

Today in class we first looked over pages 33-36 in our unit packet. Afterwards we watched a Bill Nye Video and learned that:

• Contents of the clay in KT has Iridium which is something only found in space (this is evidence that there was an asteroid which had hit earth in the past).
• That an asteroid made all living creatures on earth perish (dinosaurs, etc.)
• The asteroid was said to be 8 times bigger than the grand canyon.
• A man made an experiment where he took a chamber that had gasses which were used back in time and then placed energies into it which created amino acids. (this shows that this may of been the reason how life was created).

SCRIBE 2/1

Today in class we started off by taking notes on genetic variation, genetic drift, and speciation. genetic drift is changes in the gene pool of a small population due to chance.

We then learned about variation in Grasshopper legs by working on Lab 40. With our lab groups, we were asked to measure the length of 5 grasshoppers' femurs. This data was then used to find the average femur length from all the grasshoppers. The different lengths of femurs represent variation-a change in gene frequency.

The homework for tonight is to finish lab 40, read 19.2, and the T.V. ad that is due on feb. 28.

EXTRA CREDIT!!!

Click here to watch the recent segment about the hunting of endangered species in Texas.

For extra credit, post a comment to this post expressing your response and opinion on the story. The quality of your response will determine how much extra credit you get! This opportunity will be limited to the first 4 people in your class to respond.

SCRIBE JAN 25/26

IN class on Wednesday we reviewed The movie that we watched on tuesday Mrs.Stien explained that The booby pushed its brother out because the mother wont be able to feed both of them or she wont have enough food so the booby pushed the brother out. she will feed them but she sacrifices her food to the baby and she will die. also the booby always hatch 2 eggs and 40% that they wont hatch thats why they hatch two so at least they get one. after we discussed about the movie we started our lab NATURAL SELECTIONS LAB.
The lab demonstrated NATURAL SELECTION by using a piece of  fabric  as the environment and hole punched chips as animals and we were the predators and see which type of color had the best chance to survive so we picked up The chip without look too long just one second and see how many left and this shows basic natural selection.
The lab page was 18.



In class thursday we talked about our double bubble map of Darwin and Lamarck Mrs.Stien told  us the key concepts of the two. Darwin was later than Lamarck and Darwin disagreed on Lamarcks hypothesis. darwin had a theory because he had much more evidence than Lamarck while Lamarcks was A Hypothesis. darwin used natural selection to describe evolution and they both accepted that environment also influenced evolution.after our discuss we turned back our papers and we did our lab BREAKFAST FOR THE BIRDS.
 this lab demonstrated how evolution worked on the birds BEAKS. we had 4 different types of beaks Plier, Forceps, Spoon, Staple remover. we had 5 station and 1 MINUTE to "eat" the food station one wich was Larvae (rice) and station 2 was Pond with small animals and plants Station 3 was seeds in an open fields station 4 was rocky ledge with freshly killed rabbits Station 5 was worms hidden in grass these environment needed all different types of beaks. one beak matched one environment and this show how birds evolve by eating as well

Scribe January 24

Due on FEBRUARY 28 is the new project we were given. It's a group video were you have to explain why we should or should not give money for an endangered animal. Make your groups now and start shooting. remember it should be interesting and should make the audience want to watch. You need research to persuade the audience for your cause.

In class today we watched the rest of the video and learned a lot about Darwin and his discovery's on the islands. We learned that finches on the islands are a great example of evolution. On each island there are different finches because on each island there are different size seeds. Also if there is a drought through natural selection bigger birds with larger seeds will survive because there will be larger seeds. the large birds will breed because they will survive to reproduce and the next generation will be a bigger size. but if it rains a lot the opposite will happen and the smaller birds will bread so the next generation will be smaller.

As animals moved to different islands they change because of natural selection. They do this in order to survive. Natural selection is a change that occurs in an organism to survive when the animal needs to adapt to the environment around him.

I found this really cool paper on natural geographic about a island with mini animals and people, like a mini elephant a mini Komodo dragon and more here is the link. its cool cause its also got to do with evolution.

http://news.nationalgeographic.com/news/2004/10/1027_041027_homo_floresiensis.html

Scribe

2nd Semester just started and we are starting a unit on EVOLUTION.

Homework is to Read 16.1-16.3 (pgs. 450-464) and do a double bubble "Darwin vs. Lamark". Also visit Mrs. Stein for a homework pass but read the reflection questions she posted first so you know what to talk about.

We went over things we knew about Evolution and made this list:

-Time of Change

-Adaptation to enviroment

-Changes/Transformation

-"Apes turn into People" --> False

-How Humanity got to where it is today

-Pangea --> landmass of all the continents

-Charles Darwin

-"Proved" --> it is a theory, cannot be proved

-Galapagos- origin of understanding of evolution

-migration

-SURVIVAL OF THE FITTEST

Evolution: Change in a species over time

EVERYTHING SHARES A COMMON ANCESTOR!

In class we started watching a video on Darwins voyage to the Galapagos Islands which are the tips of volcanos coming through the water.

We had four questions to answer.

What did Darwin observe on his voyage?

-In 1822 darwin went to the Galapagos for 20 years.

-He came to the conclusion that living things are shaped by the world around them.

-He saw Giant Turltes, Hummingbirds, Plants, Iguanas, Finches, and many more.

-He noticed that the same animals on each of the different islands which are pretty close together have different fundamental characteristics; Turtles had different shaped shells, birds had different beaks and colors.

What is Natural Selection?

-The process that animals are able to adapt and have different abilities and characteristics which suit them better for their environment.

How did the story of the Finches Beaks illustrate Natural Selection?

-It showed how each Finch from a different island had different beaks specifically for their island. some had beaks to dig better, crack nuts better, eat certain foods better.

It shows how they adapted to perform better in the places they are in most.

How did iguanas illustrate Natural Selection?

We did not finish the video so we will continue it tommorow. I am guessing iguanas adapted their skin colors.

JACK WILL BE OUR NEXT SCRIBE!!!

2nd Semester! Wooohooo!

Welcome Back!

As 2nd semester gets underway, I encourage you to take a moment to reflect on first semester. If you would like to earn a homework pass, come visit me in the next week and be prepare to answer these questions!

1. Do you feel like the grade you got this semester was the grade you earned? Why?

2. What were you most proud of from 1st semester?

3. What disappointed you most about your performance from 1st semester?

4. What goals have you set for yourself for 3rd quarter/2nd semester?

5. What will you do to achieve those goals?

6. What can I (Mrs. Stein) do to help you?

I look forward to speaking with each of you about how to make this a successful semester!

The first scribe for second semester will be TYLER!

AndyD's Muddiest Point

Positive and Negative Feedback, What are they? Differences? Similarities? Thanks =).

Muddiest Point

Can you please explain to me the differences in the menstrual cycle with and without fertilization?

Muddiest Point

im confused about the phases of the menstrual cycle

Muddiest Point

My muddiest point is like, the stages of the menstraul cycle, I'm having a little bit of trouble understanding which stages go where and what exactly they do and release. Thanks!
Jessica B

Muddiest point

my muddiest point is what is the diffrence between LH and FSH because don't the both do the same thing?

Class on Tuesday, 1/10/11

Today in class we reviewed the menstrual cycle, learned about the development of the embryo, and watched a video on it.

When estrogen levels get low, the hypothalamus signals the pituitary gland to release FSH (Follicle Stimulating Hormone) and LH (Leutinizing Hormone). FSH stimulates the ovaries to produce more estrogen, which builds up the lining of the uterus, while LH controls the formation of the corpus luteum and signals for ovulation to occur.

Fertilization occurs in the oviduct. A fertilized egg is called a zygote. Cell division will begin; the embryo is just one cell, the morula is a solid ball of cells, then the blasocyst which is a hollow ball of cells. The blasocyst takes a week to implant in the uterine lining (implantation). After this, differentiation occurs and the cells specialize. This then leads to gastrulation.

Gastrulation is the formation of 3 embryonic development germ layers. Endoderm makes up the lining of the digestive, reproductive, and respiratory system. Mesoderm makes up the muscles, blood, and bones. Ectoderm makes up the skin and nervous system.

In the video, we saw how the embryo turns into the morula and then into the blasocyst. We saw how the blasocyst implants in the uterine lining and the development of the baby in the uterus.

Our homework for today is to post a muddiest point by tonight and comment on one tomorrow. We also have a test on this unit this Thursday.

Muddiest Point

My muddiest point in this unit was why the release of FSH and LH are needed and how the hypothalamus know to signal the pituitary gland to release these hormones.

muddiest Point

My muddiest point is how does the fertile egg go from being stuck in the uterine lining to the ovary?

Muddiest Point

My muddiest point is what is a blastocyst and where do the cells go after this step.

Muddiest point Matt DeBow

My muddiest point is the difference between fsh and lh. Do they both do the same thing or do they do different things.

JoeM's Muddiest Point

My muddiest point is what does the blastocyst turn into after it is made?

Muddiest Point

My muddiest point is the difference between the embryo, morula and blastocyst. Thanks!!

Muddiest Point-Patryk S

My muddiest point is what FSH, LH, Estrogen, Patrogen and what they trigger. Each hormone when released has a different effect and i dont know what the effects are.

1/9

In class, today we turned in 34.4 Flow Map on "Fertilization, Development, & Pregnancy" which was assigned on Friday as homework to do over the weekend. After, we took out UP 20-21 and we first went through the answers with the people sitting near us and then we went over the answers as a class. We didn't turn in UP 20-21. Next, Mrs. Stein has us work on Lab 31 with anyone we wanted. Even though, you were supposed to have it done for homework she let us talk to our partners about any questions we had trouble on. She walked around and answered questions while we worked on it. We worked on Lab 31 for about ten minutes, and then we turned it into the bin. Finally, we took notes on two slides that Mrs. Stein put up on the smart board.
Here are the notes:

Contraception
-preventing union of egg and sperm
-barrier method
- condoms, diaphragm, vasectomy
-chemical methods prevent gamete formation or kill gametes
- The pill, IUD, spermicide
-behavioral changes in sexual practices
- abstinence, rhythm, withdrawal

Fertilization and Implantation
-fertilization occurs in oviduct
- zygote- fertilized egg, diploid cell
-cell division begins
- embryo-> 1 cell
- morula-> solid ball of 64 cells
- blastocyst-> hollow ball of cells
-blastocyst takes 7 days to implant in uterine lining
-differentation begins, cells specialize

HOMEWORK: 1) Test Thurs. 2) FINALS start studying!
3) Muddiest Points->Post by Tues. Midnight
Comments by Weds. Midnight
Since there isn't going to be much homework this week make sure you don't slack off and actually start studying a little each night for the TEST ON THURSDAY!! Just because there may not be mandatory homework DOES NOT MEAN you shouldn't study. Remember studying is part of the homework so do it, and don't procrastinate until the last minute!!

Andrijana will be our next scribe!

GabbyM's Muddiest Point

My muddiest point for this chapter is the difference between estrogen and progesterone because it seems to me that they both cause the uterine lining to thicken. That is a similarity and I was wondering what is a difference. Thanks!

Muddiest Point

Im confused about positive and negative feedback. Also the endocrine system.

Muddiest Point 1/9

My muddiest point is number 5 on the objectives sheet. It says know the terms in the context of hormones and the menstrual cycle. The terms are negative feedback and positive feedback. Is that the chart where if the estrogen and progesterone are high, they tell the hypothalamus to turn everything off? If not, what are they?

Muddiest Point

My muddiest point for this section is that I am confused on the the difference of functions between progesterone and estrogen. I feel like they both do the same function, thicken the lining of the uterus.

Scribe 1/6

Today in class we had a reading check on sections 34.1 and 34.2 on the assigned pages. After the reading check we took notes on the Pituitary gland, the Hypothalamus, and the contol of Endocrime system.

Hypothalamus

1. Integrates the Endocrine and Nervous system
2. Controls Pituitary

Pituitary gland

1. Secretes 9 Hormones
2. Regulates other endocrime glands

Control of Endocrime system

1. Regulated by a feedback mechanism
2. Negative- last signal inhibits the first
3. Positive- last signal stimulates the first

After the notes we got to work on lab 31 wich is part of the homework. The rest of the homework was up 20-21 and section 34.4 with a flow map on fertilization, development, and pregnancy

Paul S muddiest point

I am confused on "Hypothalamus". What is it, and what does it do?

Thanks,
Paul S