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Apex of the heart

Apex of the heart
Sternocostal surface of heart (apex is not labeled, but is visible at bottom right)
Diagram showing relations of opened heart to front of thoracic wall.

Ant. Anterior segment of tricuspid valve.
A O. Aorta.
A.P. Anterior papillary muscle.
In. Brachiocephalic artery (Innominate).
L.C.C. Left common carotid artery.
L.S. Left subclavian artery.
L.V. Left ventricle.
P.A. Pulmonary artery.
R.A. Right atrium.
R.V. Right ventricle.
V.S. Ventricular septum.
Latin Apex cordis
Gray's p.527
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Anatomical terminology

The apex of the heart is the lowest superficial part of the heart. Auscultation at the apex is associated with mitral valve closure.

It is directed downward, forward, and to the left, and is overlapped by the left lung and pleura.

External anatomy

It lies behind the fifth left intercostal space, 8 to 9 cm from the mid-sternal line, slightly medial to the midclavicular line.

Alternately, it can be found about 4 cm below and 2 cm to the medial side of the left mammary papilla.


This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

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