Cusps of heart valves

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Cusps of heart valves
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Base of ventricles exposed by removal of the atria. (Valves visible on top of heart.)
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Aorta laid open to show the semilunar valves. (Note that captions don't align with current terminology.)
Cusps of heart valves

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Overview

The cusps of the heart valves serve to seal the heart valves when closed. There are normally three cusps for each valve except the mitral valve (hence its alternate name, "bicuspid valve".)

"Nodules" are located at the tip of the valve, to form a tighter seal.

Semilunar valves

Atrioventricular valves

  • tricuspid valve
    • "anterior cusp" (or "infundibular cusp")
    • "posterior cusp" (or "marginal cusp")
    • "septal cusp" (or "medial cusp")

References

  1. SUNY Labs 20:21-0102 - "Heart: The Pulmonic Valve"
  2. SUNY Labs 20:29-0104 - "Heart: The Aortic Valve and Aortic Sinuses"

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