1. What is the purpose of the pericardium?
The pericardium is the membrane that encloses heart, and covers the major heart vessels.
2. How do arteries differ from veins in their structure?
The arteries bring oxygen-rich blood away from the heart and the veins bring oxygen-poor blood back to the heart. Veins have valves that prevent the backflow of blood.
3. what function do you think the auricle serves?
The auricle allows for a higher blood capacity and higher blood volume.
4. Observe the external structures of the atria and ventricle. What differences do you observe?
The ventricles have thicker walls than the atria because they pump blood out of the heart.
6. draw a picture of the tricuspid valve, including chordate tendinae and papillary muscle.
7. Why is the “anchoring” of the heart valves by the chordae tendineae and the papillary muscle important to heart function? It is important so that the heart does not pump the blood in the wrong direction.
8. Using pictures and/ words describe what you see.
9. What is the function of the semi-lunar valves?
The semi-lunar valve stops any arterial blood from re-entering the heart.
10a. If the valve disease occurs on the right side of the heart, it results in swelling in the feet and ankles. Why might this be?
The ventricles will not be strong enough to pump blood from the feet and toes, and so the blood will accumulate there.
b. If the valve disease occurs on the left side of the heart, what complications would you expect to see?
The body would have trouble getting oxygen throughout the body, and cannot exercise.
11. Using pictures and/ or words, describe what you see.
12. Describe how the left and right sides of the heart differ from each other.
the right side receives deoxygenated blood, and the left side pumps oxygen rich blood.
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