The outter part of the heart was larger than I expected it to be, the color was also not what I had imagined a " heart" being. I always imagine a heart in our body being the shape of a real heart but when we saw the heart obviously it wasn't in the shape of a real heart. the heart was very jelly like and slimy yet firm. The atria and pulmonary trunk were very easy to find. the aorta was a big hole and the pulmonary trunk was a flap at the top as well.
Internal part of the heart:
The internal anatomy of the heart was very interesting to see. it was different then I expected. if you haven't studied the heart you wouldn't know what is really happening in the heart. The chordae tendanae and av valve looked similar inside of the heart, the chordae tendane felt like hard string and the av valve were soft pink and mushy.
Questions:
1. The most surprising thing about the dissection would be how everything was so much tinier than i imagined to be, and the left side of the heart was so much thicker than right, also the heart has a lot of muscle!
2. The atria and ventricles are different sizes because the atria only has one job to collect and squeeze blood into the ventricles. Then the ventricles are larger because they need to contract the blood.3. The left ventricle is more muscular than the right ventricle because the left ventricle pumps blood to the entire body and right only does to the lungs.
4. The left AV Valves (mitral) function is to close when the left ventricle contracts to prevent back flow of the blood from the left atrium and right AV Valves (tricuspid) function is to close when the right ventricle contracts. Then the blood from the ventricles are able to go out of the heart into the blood vessels during contraction. Mitral and tricuspid valves open when the ventricles relax, to let blood to enter the ventricles from the atria.
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