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Endocardium
Interior of right side of heart
Details
Identifiers
Latin	endocardium
MeSH	D004699
TA	A12.1.05.001
FMA	7280
*Anatomical terminology* [edit on Wikidata]

The Endocardium is the innermost layer of tissue which lines the inside of the heart. It plays a role in controlling the function of the myocardium, the heart muscle. The endocardium is made of simple epithelial cells similar to those which line blood vessels.

In addition to lining the inside of the heart, the endocardium also regulates heart contractions and aids cardiac embryo development.

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Anatomy of the heart

General

Surface

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

Authority control
National	Israel United States
Academics	Terminologia Anatomica