Which of the following is true about atrioventricular valves?
A) One is found at the entrance to the pulmonary trunk.
B) Their closing causes the second, shorter "dub" sound of the heartbeat.
C) They are also known as the triscupid and bicuspid valves.
D) One is found at the entrance to the aorta.
E) They are composed of three half-moon shaped flaps.
Correct Answer:
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