First slide

Circulatory Pathways

Question

Unlike tricuspid valve, pulmonary semilunar valve

Easy

A

Has three cusps
B

Is not supported by chordae tendineae
C

Has only two cusps
D

Allows flow of blood into ventricle

Solution

Chordae tendineae are tendon-like cords that connect the cusps of the atrioventricular valves to papillary muscles . They prevent the cusps of AV valves from bulging too far into atrium. They are not associated with the pulmonary or aortic semilunar valve each of which also has three cusps, like the tricuspid valve.

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