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2. What is the difference between the structure of the atrioventricular valves and the semilunar valves?...

2. What is the difference between the structure of the atrioventricular valves and the semilunar valves? What is the function of each type of valve?

3. Where are the papillary muscles of the heart, and what do they look like?
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Answer #1

Answer 2. Atrioventricular valves are stabilized by papillary muscles and chordae tendeniae while the semilunar valve being smaller doesn't require the support of papillary muscles and has self supporting cusps and no chordae tendeniae.

Atrioventricular valves have 2 or 3 cusps while the semilunar valves have only 3 cusps. Another difference among them is that they "close off" different sections of heart.

Answer 3. Papillary muscles are located in the ventricles and they are attached to the Atrioventricular valves via chordae tendeniae.

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