Heart Dissection Lab

     1. The purpose of the pericardium is to protect the heart.
     2. Arteries take blood away from the heart and veins bring blood to the heart. Valves have thinner walls and have one-way valves to prevent backflow.
     3. The auricle inflates when blood pumps into the heart and increases the volume of the atrium.
     4. There is more fat at the top of the heart near the atrium. The ventricles have thicker walls than the atria walls.
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     7. The chordate tendinae and the papillary muscles are important to heart function because they
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     9. The semi-lunar valves prevent blood from the atrium from entering the heart again.
    10. Valve disease on the right side of the heart results in swelling in the feet and ankles because the blood returns to that area of the body. Since the tricuspid valves stops working, blood would go back through the inferior vena cava and back to the lower part of the body.
          b) If valve disease occured on the left side of the heart, it would mess up the blood flow between the lungs and the left atrium. This would interrupt the flow of oxygenated blood to the rest of the heart.
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     12. The left side of the heart deals with oxygenated blood and the right side deals with deoxygenated blood.

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