三尖瓣

[ noun ]
valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts
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Tricuspid \Tri*cus"pid\, a. [L. tricuspis, -idis; tri- (see
{Tri-}) + cuspis a point: cf. F. tricuspide.]
1. Having three cusps, or points; tricuspidate; as, a
tricuspid molar.

2. (Anat.) Of or pertaining to the tricuspid valves; as,
tricuspid obstruction.

{Tricuspid valve} (Anat.), the valve, consisting of three
triangular membranous flaps, at the opening of the right
auricle into the right ventricle in the heart of most
mammals; -- sometimes called the {tricuspid valves}, each
flap being regarded as a valve.