Left heart

From Wikipedia, the free encyclopedia

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

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

Left heart is a term used to refer collectively to the left atrium and left ventricle of the heart; occasionally, this term is intended to reference the left atrium, left ventricle, and the aorta collectively.

The left atrium receives oxygenated pulmonic blood from the pulmonary veins. The blood is then pumped through the mitral valve into the left ventricle, which in turn pumps the blood through the aortic valve into the aorta.

The left side of the heart is thicker than the right because it has to pump blood from the left ventricle into the aorta and the body.

See also: Right heart

v • d • e

Anatomy of torso, cardiovascular system: heart

atria (interatrial septum, musculi pectinati) • ventricles (interventricular septum, trabeculae carneae, chordae tendinae, papillary muscle) • valves

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) → pulmonic 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)

pericardium (sinus) • epicardium • 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../../../l/e/f/Left_heart.html"

Category: Cardiovascular system

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