HEART


Meaning of HEART in English

I

Organ that pumps blood, circulating it to all parts of the body (see circulation ).

The human heart is a four-chambered double pump with its right and left sides fully separated by a septum and subdivided on both sides into an atrium above and a ventricle below. The right atrium receives venous blood from the superior and inferior venae cavae (see vena cava ) and propels it into the pulmonary circulation. The left atrium takes in blood from the pulmonary veins and sends it into the systemic circulation. Electrical signals from a natural pacemaker cause the heart muscle to contract. Valves in the heart keep blood flowing in one direction. Their snapping shut after each contraction causes the sounds heard as the heartbeat. See also cardiovascular system .

II

[c mediumvioletred] (as used in expressions)

artificial heart

bleeding heart

congenital heart disease

congestive heart failure

coronary heart disease

ischemic heart disease

heart attack

heart disease

heart failure

heart transplant

open heart surgery

{{link=pulmonary heart disease">pulmonary heart disease

Britannica English dictionary.      Английский словарь Британика.