Link on Animal Size and Heart Rate

http://www.newton.dep.anl.gov/askasci/gen01/gen01654.htm
http://www.hhmi.org/biointeractive/heart_size/frames.html

HAPPY THURSDAY

Today in class we...DISSECTED A SHEEP HEART!!

Before we dissected the heart we had to take a quiz :( Luckily I didn't have to take it because I wasn't in class on Wednesday, so I don't really have much to say about it. Sorry

In the dissection we had to locate the pulmonary artery, which happened to be on top of the heart, and the coromary arteries, which were located in the fat on the heart. Before we could slice and dice the heart we had to show Ms.Stein that we knew the right side of the heart from the left side and locate the right and left ventricles and the right and left atriums.

We found out that if you stick one finger in the pulmonary artery and another finger in anotehr hole in the heart far enough then your finegrs will touch!!!

Homework:

1) Read 33.2

2) Four Corners Sheet

3) Finish the Heart Lab if you didn't finish it in class


THE NEXT SCRIBE IS...

MICHELLE

Happy Passover!

Today in Bio we started off by getting our UP (11-17) pages that we annotated and then filled out the questions for stamped. After getting our homework stamped we took a bunch of notes on the heart, circulation and Blood vessels. When we talked about the circulation in humans we figured out that humans have a four chambered heart (2 ventricles on bottom and 2 atriums on top), we also have double loop circulation which means the blood not only circulates through our body it, also circulates through your lungs as well. We then reviewed the heart diagram we were given and named all the parts to review for our quiz tommorow (no word bank). Then we started our coloring homework at the end of class (not all diagrams need to be labled!).

Parts on Diagram:
Supirior Vena Cava
Infirior Vena Cava
Pulmonary Vein
Pulmonary Valve
Pulmonary Artery
R/L Atrium
R/L Ventricle
Tricupsid Valve
Septum
Bicupsil Valve
Aortic Valve
Aorta
Desending Aorta
Where you would find Oxygenated blood and Deoxygenated blood




HOMEWORK
UP 21-23--- Color and Label specified diagrams
QUIZ----- ON Heart


Next Scribe: Olivia

Flyer Than Aladdin :)

hey hey hey it's tuesday :)

today in class we started off by getting a new unit packet, a new calendar , and we turned in our cornell notes from 33.1. we got grade reports and we got back a flow map! then we did up page nine and ten in groups and when we were going over the answers Olivia had this bizarre question..I believe it went as follows (correct me if i'm wrong): "Mrs. Stein, scientifically, which is more likely to be real a werewolf or a vampire?" and mrs. stein gave a one word answer : Vampires. And I think I know why. Some people become so obssesed with them that they start drinking blood which turns their obssession into a mental illness, so they truely believe that they are vampires which I guess makes it more probable that they exist. I mean i guess it's what you define vampire as because some believe they never sleep and others say they sleep upside down. yay or nay?
Moving on, we watched a video as we walked in and at the end of class and both were on the circulatory system :)

i'm sorry that this was mostly about olivia's question but to be honest we didnt do a whole lot in class
homework:
up pages 11-17 read +annotate (underline and write in the margins)+ answer ?s on page 17


the next scribe is Olivia :)

kaycoolbai :)

Halfway through the Week

Today, we started off class by turning in our kidney dissection worksheets and with Mrs. Stein selling some hope bands. (Which people should wear on Friday!) Then we continued by taking some notes, about the kidney and the nephron. This is the nephron picture that Mrs. Stein on the powerpoint:

The Nephron is the basic unit of the kidney. In it filtration and reabsorption happen. Filtration- water, urea, glucose, salts, amino acids, and vitamins filter into the nephron.Most proteins and blood cells remain in the capillary. Reabsorption- needed materials re-enter the bloodstream Collection- concentrated urine is collected and leaves kidneys via ureters.

Kidney:

• 
  
  
  The kidney removes metabolic wastes



• 
  
  
  Maintains homeostasis: - it keeps salt and water balance

3 steps: 1.) Filtering blood 2.) Reabsorbing nutrients 3.) Collection and excretion of urine

And then at the end of class we did pages 17 and 18 in the UP.

After that we did an experiment with urine to check what was in it. Jacob and Sam were the helpers and I also think Jacob ended up tasting one of the urine samples!!

Homework: Test is on FRIDAY!

KIDNEY DISECTION!

IN CLASS:
-Discussed rules and expectations of the kidney dissection
-Kidney dissection

HOMEWORK:
-Finish kidney dissection lab (UP 23-28)
-Unit test on Friday

KIDNEY DISSECTION:
The dissection was not bad at all. We had to cut off the fat tissue and then cut the kidney in half and examine and figure out the different parts. Then Mrs. Stein quizzed each lab group by pointing to a part of the kidney and asking each person what she was pointing to. All in all i think it wasn't too bad and everything went pretty well. Most people finished early. Also, if you were not in class today you are still able to complete the questions that go along with the lab.

OMG IT'S MONDAY!!

GREAT STUFF YOU GUYS!! KIDNEYS!! :D Ok... we've started the class by getting two stamps for UP 19-20 and the Lab we did last week. Tomorrow we will be dissecting a sheep KIDNEY!! I can barely hold my excitement :] Next we answered these questions on the board: 1) What organs are the part of the excertory system? 2)How does the excretory system play a role in homeostasis? 3)What does the cartoon below illustrate? What does it do? (I couldn't find the exact picture but this was close enough.) Answers... 1) Liver, skin, kidneys, and lungs. 2) Balances the body to keep metabolic wastes out. 3)A nephron, it is the functional unit of the kidney (it filters the blood) Next we went over our lab and the results of the nutrition test.

Please make sure you get the correct results from a friend....

-For the bread, it should defiently be positive for starch but everything else could be either or... Bread is a fortified food.

-If you tested cheese for starch (which you didn't have to..) it would test positive (which shouldn't) but the powder on the cheese that prevents it from sticking to eat other is the only thing that has a starch compound in it..

-Why is there no fat in potatoe?? Potatoe is full of carbohydrates and if you don't consume the energy you get from it it is store and converted to fat...

We also took some notes.....

Excertion -The removal of metabolic wastes from the body. -CO2, salts, water, nitrogenus waste, uric acid and urea -Excertory organs - lungs remove CO2 - skin removes salt, water, and some urea - kindeys are the main excretory organ Excretory System -Renal arteries carry "dirty" blood from the aorta to the kidneys. (Unfilterd blood) -Renal veins carry "clean" blood from the kidneys to the inferior vena cava -Ureters carry urine from the kidneys to the bladder -Urethra carries urine out of the body. We were suppposed to watch some videos afterwards but youtube wasn't working... OUR HOMEWORK.... -Read over our kidney dissection UP 23-28. -Tomorrow is the last day to visit Mrs. Stein for a homework pass. -Test Friday STUDY!!!! :O Next scribe shall be..... Ariana !! :D

80 degree weather whatwhattt

JUST SO YOU KNOW its like 80 degrees outside nbd, and the DIARY BAR IS OPEN! but anyway, in class on friday we took a quiz and then we finished our lab!
In the lab we tested various things for certain nutrients, such has simple sugars, carbohydrates, protein and fat. To test for the nutrients we had different ingredients that would show if it had the nutrient or not. Such as the carbohydrates, we put iodine solution and if it turned dark purple then it had starch in it.(which is a complex sugar).
*NOTICE*
i would have pictures but for some reason my phone won't upload them!! very sorry!

After we saw what the positive results were of each test, we then tested various foods for the different nutrients. we tested Carrots, Bread, Potato, Apple, Onion, Walnuts and Cheese for the nutrients. The results were:
Carrots:
positive for simple sugar and fats
Negative for starch and protein
Bread:
Positive for Starch, Simple sugar and Fats
negative for protein
Potato:
Positive for starch and fat
negative for simple sugar and proteins
Apple:
positive for simple sugar and fats
negative for starch and protein
Onion:
positive for simple sugar, protein, and fats
negative for starch
walnut:
positive for fats
negative for starch and proteins
Cheese:
positive for protein
negative for fats

HOMEWORK:
Read 30.4 and do up pages 19-20

sorry this was at the end of the weekend btw

NEXT SCRIBE IS...
Michelle!

Yes!!!! it's Thursday! (: 1 more day/ then weekend!!

In Class: So basically, all we did in class today was:

- get our Enzymes and Digestive Fluids Chart stamped
- went over the chart

- talked about different types of digestions and where they occur - also talked about different fluids and their functions
- continued to work on the Nutrient Lab

Check to make sure your answers are correct for the Enzyme Chart!
(answers will be given going from the "enzyme/fluid name" all the way to the "what results from its action" The words/answers are put in order according to the BLANK spots) (horizontally)

1. Salivary Glands. Starch.
2. Pepsin. Polypeptides
3. Liver. Fats. Smaller Lipids.
4. Pancreatic Amylase. Maltose
5. Stomach Protein. Smaller Polypeptides.
6. Lipase. Fatty acids/glycerol.
7. Duodenum. Glucose.
8. Sucrase. Sucrose.
9. Lactose. Glucose/galactose.
10. Peptidase. Protein.

We also did a little review for our quiz tomorrow. As Mrs. Stein said, "everything from this week is fair game." So be sure to look over all the readings that were assigned and your notes! in other words STUDY! Here are a few questions she asked us......

Q- What is the process of carbohydrate digestion? Where does it occur? What enzymes are involved? What do they get broken into?
A- Starches get digested in the mouth. Amylase breaks down starch then into maltose which is TWO sugars, and from that it turns into glucose, which is ONE sugar.

Q- What fluids are found in the stomach/their functions?
A- pepsin: breaks down proteins.
hydrochloric acid: kills bacteria/lowers ph so pepsin works.
Rennin: proteins that work on milk.

Q- What is lipid digestion? What do they get broken down into?
A- Break down into fatty acids/glycerol.
(breaking down is known as emulsification)

Look over diagrams!!!! Know parts and their functions.

Lastly, we worked on the nutrient lab.
Used 2 test tubes and mixed water with Benedict's solution in them and then put the tubes in boiling water. Both tubes were light blue before we put them into the water. After a few minutes we noticed a color change. One of the tubes went from being light blue to yellow then green then orange and then finally turned brick red!.

http://autumnmarcita.files.wordpress.com/2010/10/benedictstest-1.jpg

HOMEWORK:
-Study for quiz!
- Nutrient lab due tomorrow during class

next scribe is, Serena! (:

The Week is Half Over!

Homework:-Enzyme chart with reading (also use section 33 in textbook)
-visit Mrs. Stein in her office for a homework pass!
-sign up for science contest (for extra credit)
-Nutrient lab due some time in class on Friday

First in class, we discussed nutrients and here's what we discussed...

I -testing for carbs-simple--SMALL, less energy
                          -complex--BIG, more energy (starch)

II -testing for protein---> amino acids

III -testing for fat (lipids)--->glyceol & fatty acids

IV - testing for food <UNKNOWN>

Nutrient Lab

Today, we got our new lab groups and STARTED the nutrient lab. We only did the starch part of the lab.
We had to put starchy water into a beaker and then we added iodine. If the test was positive, then the startchy water would turn blue-ish black...

here's what it looked like when we put the iodine in.. (the iodine started out being orange-ish brown)
When we stirred that up, the whole thing turned darker and black and dark blue.


Next Scribe is.....Yvette

Sphincter Time!!!!!!!!!!!!!!!!!!!!!!

Sup Everybody

In class we took notes here are tha main ideas. The food goes through the one way tube called the ailementary canal. It starts with the mouth where mechanical digestion (teeth) and chemical digestion (Saliva, contains enzyme Salivary Amylase) break food down. It then goes to the esophagus, which connect the pharynx (throat) to the stomach. It enters stomach past a Sphincter, which closes to keep food and stomach acid from going back into esophagus. The stomach is a muscular sace lined with mucus that expands and contracts to perform mechanical digestion. It also uses chemical digestion by activating pepsin that breaks down proteins. Nex is the small intestine beginning with the duodenum, Here carbs, lipids and everything else is digested here and nutrients are absorbed. The SI is lined with Villi which increase surface area. In the large intestine water and indigestible junk is absorbed, bacteria absorbs the vitamin K in the food and you are keft with FECES. The other structures involved that arent places the food travels are the liver which makes bile qhich emulsifies fat, gall bladder which stores bile, and pancreas that makes enzymes.

HOMEWORK: Pre-lab about nutrients and read 30.2.

An Airhead for your troubles

I know you want it

The Next Scribe is Melissa

Happy Monday

when we got to class we settled after picking up a note card and new unit packet then mrs stein passed back our grade reports. then we talked about the science contest! if you participate you can get extra credit but don't ask how much because mrs. stein hasn't decided. pretty much its a contest on how well you answer a few questions relating to science on april 14th. only one period that you sign up for to go to the advent is when you will be competing. you create a team of four people and freshman are more valuable because we haven't taken as many science classes as upperclassmen (yay us!) if you want more details read the website: https://webmail.glenbrook225.org/owa/redir.aspx?C=caf88c51729148829a2f662a0033e31e&URL=http%3a%2f%2fwww.glenbrook225.org%2fsouth%2fdepartments%2fscience%2fPages%2fhome.aspx. after we talked about getting new seats when people return from spring break. also we filled out a post card about how comfortable we felt with dissection and if we wanted to do a lot of dissecting or not and who we worked well with. these will help mrs. stein determine new lab groups. new we talked about what we already know about our new unit! 

- teeth and saliva break down food

- layer of mucus protects stomach from acid which would destroy the stomach

- small intestine is 30ft?

- large intestine is 10ft?

- our bodies take all nutrients from food and give it to the blood then the blood transports the nutrients (this happened in the small intestine)

- waste is released

- nutrients: 

         1. protein   2. fat   3.carbohydrates   4. water   5. vitamin   6. minerals 

goals of digestion:

         breaking stuff down, absorbing nutrients and releasing waste

HOMEWORK: 

30.3 with flow map (starting with mouth ending with anus) 

see mrs. stein to talk about the last quarter for a homework pass by tuesday

extra credit if you enter the science contest and if you place top 4 you get even more extra credit!