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.