engagement in class

in my opinion my engagement in this class is pretty good because i try to ask as many questions in this class as i possibly can. also i will do anything in my power to do anything to show that i can do a better handstand then mrs. philips. ;)

Circulatory system review

PULMONARY SYSTEM:

The blood leaves the heart from the right ventricle, the blood is deoxygenated. The deoxygenated blood travels through the pulmonary artery to the lungs. Then the blood becomes oxygenated and returns to the heart from the pulmonary vein.

SYSTEMIC SYSTEM:

oxygenated blood leaves the heart from the left ventricle through the aorta to the rest of the body where systemic circulation happens, and deoxygenated blood is brought back up to the heart from veins

Arteries

-Takes blood from heart to the whole body.

-Has smaller lumen

-Has oxygenated blood

-Doesn't have valves

Veins
-Takes deoxygenated blood from body to the heart.
-Have larger lumen. Able to stretch more.
-Deoxygentated blood
-Has valves

Heart 1

I wanna know how a heart transplant happens? And if the person temporarly dies?

http://m.youtube.com/watch?v=bdIZkasIDas

The surgeon will begin by exposing the chest cavity through a cut in the ribcage. The surgeon will then open the pericardium (a membrane that covers the entire heart) in order to remove your diseased heart. The back part of your own left atrium will be left in place, but the rest of the heart will be removed.

Your new heart will be carefully trimmed and sewn to fit the remaining parts of your old heart. This transplant method is called an "Orthotopic procedure". This is the most common method used to transplant hearts.

http://www.cts.usc.edu/ht-pg-hearttransplantprocedure.html

A person doesnt die when the heart transplant surgery is happening because they put a machine that pumps blood through your body so you do not die.

http://m.youtube.com/#/watch?v=SMGQODiX3dE&feature=youtube_gdata_player&desktop_uri=%2Fwatch%3Fv%3DSMGQODiX3dE%26feature%3Dyoutube_gdata_player

Inhalation: Happens when there is not enough O2 in our lungs and to much CO2. 

So we inhale to get more O2. Diaphragm goes down and expands.

Exhalation: Happens when there is to much CO2 in body so we have to get rid of it and take in O2. Diaphragm going up and contracts.

how can pollution effect your lungs?

"One of the biggest things that affects the lungs with smoking is the intake of oxygen. Under normal breathing circumstances, you inhale just air. It is not always fresh, but it is still just air. When you do this, your lungs fill up and and expand normally. But when smoking, you are not breathing in all air. You are breathing in some air and some smoke at the same time. This has a negative affect on tiny hairs called cilia inside the lungs. These are used to filter out particles of dust and foreign matter."

Read more: How Does Smoking Affect the Lungs? | eHow.com http://www.ehow.com/how-does_4564272_smoking-affect-lungs.html#ixzz2PdBGWeI7

The picture above is showing a non smoker and a smokers lungs. As you can see smoker lungs become very black and ugly. Also people that smoke have a chance of getting lung cancer.

Vital Capacity


1. How does your vital capacity compare to others in the class? Describe some reasons why you think your vital capacity is what it is. Why are the highest and lowest vital capacities the way they are?

I had the best vital capacity in the class by having a 5L blow. I think my vital capacity is so good because i play a lot of sports so i have to breath a lot so my lungs have become larger. Usually the unfit people will get a lower capacity and the fit people will get a high capacity. Also gender matter because men have a higher average then girls.

2. How much air is in a usual breath? Why are our breaths the volume that they are?

500ml in a usual breath. because thats how much oxygen our body needs to live.

3. How is the mechanism of exhaling forcefully different than a usual exhalation? Why would practice at this via exercise/instrument playing/singing make you better at it?

When we are breathing regular we dont have to use our muscles to breath but when we were trying to see who had more capacity, we had to use our abs to squeeze our lungs so all the air comes out.

Please write a blog post reflecting on your learning in Biology 12 so far this year.  Here are your guiding questions -

1.  Provide an example of a experience (or more than one) where you felt successful in class.
I felt successful in this class on the last test because I feel confident that I did really good. Also when I beat ms.phillips in a hand stand.

2.  Write about your work habits in class - if you look through your binder is there a lot of unfinished work? Have you handed in all your assignments?  If not, why not?  Provide evidence if possible.

I feel as if sometimes I could work harder because I saw some unfinished work in my binder.

3.  Have you had a chance to work collaboratively with other students in the class?  How has that enhanced your learning?  Or not?
Yes I have had many times to collaborative with others and that is one of the reasons I love this class.

4.  What goals do you have for Biology 12?  What do you need to do to get there?  If your goal is about a mark, please reframe that into the work/learning that you hope to achieve.

My goal for this class is to get a good grade that I am satisfied with which would be a 75+. I would achieve this by studying for all the test and finishing all my assignments too.

Once you have published your post, fill in your URL on the interim report that is going home to your parents.  If you are following other students in the class, please comment on at least one blog post as well.

Lab questions

1.  Describe a positive result for each of the tests that you performed in the lab.
When we rubbed the food against the paper the and left it for around ten minutes. When we saw the paper after the ten minutes we noticed that there were transparent spots which meant that it was a positive result for lipids.

When we added iodine to the food the food would turn to black if it contained starch.

After adding Benedict's solution if it turned yellow it was positive  and it meant that it had simple sugars.

2.  Starch molecules are large carbohydrate polymers.  Find and post an image of the molecular structure of starch.  What are the building blocks that starch molecules are made of?



The building blocks are glucose molecules and 2 of them are known as maltose but when single known as an monomers. 

3.  Thomas and Josh had interesting results to their simple sugar test - if you are following either of their blogs, look at their picture of their test tubes after they took them out of the hot water bath.
After 2 minutes, only 2 of the test tubes were yellow/orange, and the rest remained blue.  They took the two positive test tubes out of the hot water bath and left the others in the hot water bath for 2 more minutes.  At the end of the two extra minutes all the test tubes indicated a positive result.  Based on your knowledge of carbohydrate molecules, why do you think they got these results?

The reason why they had to leave the other test tube in the hot water was because those food items, starch molecules were probably bigger so it took a longer time for the heat to break the starch chain into glucose molecules. So after the two more minute the hot temperature was able to break the starch chain and it became a positive for glucose because the chain is made of little glucose molecules. And when it is broken down the starch polymer becomes into a glucose monomer.

4.  Making connections - Describe the passage of one of your food items through the digestive system, starting with the mouth & ending at the anus.  Include the specific enzymes, accessory organ secretions & internal conditions the food/chyme would pass through from start to finish.

Start off with chewing on your food where your salivary glands shoot salivary amylase which breaks down your food, the amylase breaks it into maltose.  And then your tough send your food bolus into the back of your throat. And then the food bolus goes down goes down your esophagus by peristalsis, down to the cardiac sphincter. the sphincter opens and the bolus enters the stomach where there is gastric juice which makes the bolus into chyme. The chyme leaves the stomach from the pyloric sphincter and enters the duodenum, in here there is enzymes beings put into the chyme, they come from the pancreas. Then the chyme goes through the small intestine where nutrients is absorbed from there. Then the large intestine where water is absorbed. Then into the rectum where they become poop and is released out of the anus.