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A member asked:
Which heart valve closes first in the heart?
2 doctors weighed in across 2 answers
Triscupid valve: As the heart contracts, the tricuspid valve is able to close before the mitral valve because it faces a lower systemic venous pressure compared to a slightly higher pulmonary venous pressure faced by the mitral valve.
Answered 4/29/2020
6.4k views
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Mitral valve: Mitral closes first followed by tricuspid (s1) then aortic followed by pulmonic (s2).
Answered 9/16/2018
6.4k views
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