Question

If the papillary muscles of the heart fail to contract
a. the ventricles will not pump blood.
b. the AV valves will not close properly.
c. the AV valves will not open.
d. the semilunar valves will not open.
e. the atria will not pump blood

Answer 1

Answer:

The AV valves will not close properly.

Explanation:

Papillary muscles are located on the heart ventricles. These muscles are attached with the cusps of the tricuspid valve. They cover almost 10% mass of the heart.

Papillary muscles helps in the contraction of heart. If these muscles fail to contract, the atrioventricular valves will remain open and does not close properly. This will disturb the functioning of heart.

Thus, the correct answer is option (b)