Chordae tendineae

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Chordae tendineae
Interior of right side of heart.
The chordae tendineae are the unlabled, white tendons seen connecting the valves to the heart muscle
Latin	chordae tendineae cordis
Gray's	subject #138 532
MeSH	Chordae+Tendineae
Dorlands/Elsevier	c_31/12236883

The chordae tendineae, or heart strings, are cord-like tendons that connect the papillary muscles to the tricuspid valve and the mitral valve in the heart.

When the right ventricle of the heart contracts, the blood pressure pushes the tricuspid valve which closes and prevents a backflow of blood into the right atrium. The chordae tendineae prevents the flaps from being everted into the right atrium. Similarly, these cord-like tendons hold in position other flaps like the bicuspid or mitral valve.

[edit] External links

• SUNY Labs 20:st-0701 cvfg
• Dictionary at eMedicine chordae+tendineae+of+heart
• Dictionary at eMedicine false+chordae+tendineae
• Organology at UC Davis Circulatory/heart/chambers0/chambers11 - "Mammal heart, chambers (Gross, Low)"
• Bioweb at UWLAX Human heart model (bicuspid valve)
• Illustration at health-pictures.com

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