Cusps of heart valves

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

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

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

Contents

Cusps of heart valves
Cusps of heart valves

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

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

 This cardiovascular system article is a stub. You can help Wikipedia by expanding it.
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Anatomy of torso, cardiovascular system: heart
Structures atria (interatrial septum, musculi pectinati) • ventricles (interventricular septum, trabeculae carneae, chordae tendinae, papillary muscle) • valves • cusps
Regions base • apex • grooves (coronary/atrioventricular, interatrial, anterior interventricula, posterior interventricular) • surfaces (sternocostal, diaphragmatic) • borders (right, left)
Right heart (vena cavae, coronary sinus) → right atrium (auricle, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of the inferior vena cava, valve of the coronary sinus) → tricuspid valve → right ventricle (conus arteriosus, moderator band/septomarginal trabecula)  → pulmonary valve → (pulmonary artery and pulmonary circulation)
Left heart (pulmonary veins) → left atrium (auricle) → mitral valve → left ventricle → aortic valve (aortic sinus) → (aorta and systemic circulation)
Layers pericardium: fibrous pericardium • serous pericardium (pericardial cavity, epicardium/visceral layer) • pericardial sinus
myocardium • endocardium • cardiac skeleton (fibrous trigone, fibrous rings)
Conduction system Cardiac pacemaker • SA node • AV node• bundle of His • Purkinje fibers
Retrieved from "http://en.wikipedia.org/wiki/Cusps_of_heart_valves"
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