heart
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Words: 1934
Pages: 7
(approximately 235 words/page)
Pages: 7
(approximately 235 words/page)
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HEART
The human heart is a specialized, four-chambered muscle that maintains BLOOD flow in the CIRCULATORY
SYSTEM. Located in the thorax, it lies left of the body's midline, above and in contact with the
diaphragm. It is situated immediately behind the breastbone, or sternum, and between the lungs, with its
apex tilted to the body cavity's left side. In most people the apex can be felt during each heart
contraction. At rest, the heart pumps
showed first 75 words of 1934 total
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showed first 75 words of 1934 total
showed last 75 words of 1934 total
chest wall. The electrocardiogram (cardiogram, ECG) that is obtained in this way furnishes information about the rhythm of the heart, the conduction of the stimulus, and the condition of the heart muscle. Other methods that have been devised to examine the heart are the mechanical recording of the heartbeat, echocendiography and radioisotopes, X-ray analysis of the heart's form and movements, and X-ray contrast studies of the blood flow through the heart and the coronary vessels.
chest wall. The electrocardiogram (cardiogram, ECG) that is obtained in this way furnishes information about the rhythm of the heart, the conduction of the stimulus, and the condition of the heart muscle. Other methods that have been devised to examine the heart are the mechanical recording of the heartbeat, echocendiography and radioisotopes, X-ray analysis of the heart's form and movements, and X-ray contrast studies of the blood flow through the heart and the coronary vessels.