Heart Valves

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Last updated 7:15 AM on 8/25/26
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5 Terms

1
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What is the purpose of the heart valves?

  • Maintain unidirectional blood flow

  • Prevent backflow

  • Four valves:

    • Tricuspid

    • Pulmonary

    • Mitral

    • Aortic


2
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What are the atrioventricular (AV) valves?

  • Located between atria and ventricles

  • Tricuspid: RA → RV

  • Mitral: LA → LV


3
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What should you know about the tricuspid valve?

  • Right AV valve

  • Between RA and RV

  • Has 3 leaflets/cusps


4
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What should you know about the mitral valve?

  • Left AV valve

  • Between LA and LV

  • Has 2 leaflets/cusps

  • Also called bicuspid valve


5
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Where are the semilunar valves located?

  • Pulmonary valve: RV → pulmonary artery

  • Aortic valve: LV → aorta

  • Prevent blood from returning to ventricles