Medical Definition of Heart tones

1. The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of systole and is heard as a "lubb" sound; the second is produced by the closing of the aortic and pulmonary valves and is heard as a "dupp" sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the atria; and the fourth is produced by atrial contraction and ventricular filling but is rarely audible in the normal heart. The physiological concept of heart sounds is differentiated from the pathological heart murmurs. (12 Dec 1998)

Lexicographical Neighbors of Heart Tones

heart position
heart rate monitor
heart rhythm
heart rupture
heart sac
heart septal defects
heart septum
heart sounds
heart specialist
heart stroke
heart surgeon
heart surgery
heart tamponade
heart to heart
heart tones (current term)
heart transplantation
heart urchin
heart valve
heart valve prolapse
heart valve prosthesis
heart valve prosthesis implantation
heart valves
heart ventricle
heartache
heartaches
heartachey
heartachingly
heartachy
heartake

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