The labeling of the heart is on Amber's blog!
1. The structure of the atria has thin muscular walls, is smaller, and flimsy. Whereas, ventricles have thick muscular walls, that pump blood to the body. The biggest difference is their size.
2. Veins mostly carry deoxygenated blood, they are a thin muscular valve, and have little elasticity. On the other hand arteries mostly carry oxygenated blood, have think walls, and have high elasticity tissues. The structure of veins are flappy because veins don't carry as high pressure of the blood in arteries.
3. The valves we found in the heart are tricuspid AV valve, mitral AV valve, and the semi-lunar valve. The tricuspid AV valve's function is to separate the right atrium and the right ventricle, preventing the flow back of blood. The mitral AV valve's function is to prevent the backflow of blood into the atria during the contractions of ventricles. The function of the semi-lunar valve is to allow the blood to flow from the atria to the ventricles, and to prevent the blood from
flowing back when the ventricles contract.
4. I was mainly surprised about actually noticing all te various structures in the heart that I did not notice last year as a peer tutor for science eight, or when I was in grade eight. I was also surprised about how bloody the wart actually was. It really made the whole dissecting "adventure" more interesting. Unlike when I was in grade eight, I did not know all the functions and structures I do now. This made me feel more intrigued and curious. I definitely enjoyed the heart disection the third time around!
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