Cusps of heart valves

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Cusps of heart valves

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## Contents

* 1 Overview
* 2 Semilunar valves
* 3 Atrioventricular valves
* 4 References
* 5 External links

## Overview

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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

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* pulmonary valve[1]
* "right cusp"
* "left cusp"
* "anterior cusp"

* aortic valve[2]. (Note that one is absent in the condition bicuspid aortic valve.)
* "right cusp"
* "left cusp"
* "posterior cusp" (or "noncoronary cusp")

## Atrioventricular valves

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

* mitral valve
* "anterior cusp"
* "posterior cusp"

## References

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1. ↑ Template:SUNYAnatomyLabs \- "Heart: The Pulmonic Valve"
2. ↑ Template:SUNYAnatomyLabs \- "Heart: The Aortic Valve and Aortic Sinuses"

## External links

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* Template:SUNYAnatomyFigs \- "Valves of the heart."

* v
* t
* e

Anatomy of the heart

General|

| Surface|

* base
* apex
* sulci
* coronary
* interatrial
* anterior interventricular
* posterior interventricular
* borders
* right
* left

|

Internal|

* atria
* interatrial septum
* pectinate muscles
* terminal sulcus
* ventricles
* interventricular septum
* trabeculae carneae
* chordae tendineae
* papillary muscle
* valves
* cusps
* atrioventricular septum

* cardiac skeleton
* intervenous tubercle

Chambers|

| Right heart|

* (venae cavae, coronary sinus) → right atrium (atrial appendage, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of inferior vena cava, valve of coronary sinus) → tricuspid valve → right ventricle (infundibulum, moderator band/septomarginal trabecula, crista supraventricularis), → pulmonary valve → (pulmonary artery and pulmonary circulation)

|

Left heart|

* (pulmonary veins) → left atrium (atrial appendage) → mitral valve → left ventricle → aortic valve (aortic sinus) → (aorta and systemic circulation)

Layers|

| Endocardium|

* heart valves

|

Myocardium|

* Conduction system
* cardiac pacemaker
* SA node
* Bachmann's bundle
* AV node
* bundle of His
* bundle branches
* Purkinje fibers

Pericardial cavity|

* pericardial sinus

Pericardium|

* fibrous pericardium
* sternopericardial ligaments
* serous pericardium
* epicardium/visceral layer
* fold of left vena cava

Blood supply|

* Circulatory system
* Coronary circulation
* Coronary arteries

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