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Right atrium

Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. (SVG version)

Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. (SVG version)

Gray's Fig. 493 - Interior of right side of heart.

Gray's Fig. 493 - Interior of right side of heart.

The right atrium is one of four chambers (two atria and two ventricles) in the human heart. It receives de-oxygenated blood from the superior and inferior vena cavae, and pumps it into the right ventricle.

See also

Cardiovascular system - Heart - edit

atria (interatrial septum) | ventricles (interventricular septum) | valves (chordae tendinae, papillary muscle)

right heart: (vena cavae, coronary sinus) → right atrium (fossa ovalis) → tricuspid valve → right ventricle → pulmonic valve
→ (pulmonary artery and pulmonary circulation)

left heart: (pulmonary veins) → left atrium → mitral valve → left ventricle → aortic valve
→ (aorta, aortic sinus and systemic circulation)

pericardium | epicardium | endocardium | myocardium

conduction system: cardiac pacemaker | Purkinje fibers | bundle of His | SA node | AV node

The content of this page is retrieved from http://en.wikipedia.org/wiki/Right_atrium under GFDL