There is no left or right. there is no clockwise or anti-clockwise.
The left side of the heart pumps blood down the aorta which branches into all the major arteries supplying all the body's organs (except the lungs). Blood is collected from the organs by veins which carry it back to the right side of the heart. The right side of the heart then pumps the blood to the lungs to be oxygenated where it then returns to the left side of the heart.
2007-11-27 01:27:06
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answer #1
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answered by Greg K 3
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The main components of the human circulatory system are the heart, the blood, and the blood vessels.
Furthermore, these components can either belong to the systemic circulation and the pulmonary circulation. The systemic circulation is the main part of the circulatory system, while the pulmonary system oxygenates the blood.
[edit] Systemic circulation
Main article: Systemic circulation
Systemic circulation is the portion of the cardiovascular system which carries oxygenated blood away from the heart, to the body, and returns deoxygenated blood back to the heart.
In the systemic circulation, arteries bring oxygenated blood to the tissues. As blood circulates through the body, oxygen diffuses from the blood into cells surrounding the capillaries, and carbon dioxide diffuses into the blood from the capillary cells. Veins bring deoxygenated blood back to the heart.
The release of oxygen from red blood cells or erythrocytes is regulated in mammals. It increases with an increase of carbon dioxide in tissues, an increase in temperature, or a decrease in pH. Such characteristics are exhibited by tissues undergoing high metabolism, as they require increased levels of oxygen.
[edit] Pulmonary circulation
Main article: Pulmonary circulation
Pulmonary circulation is the portion of the cardiovascular system which carries oxygen-depleted blood away from the heart, to the lungs, and returns oxygenated blood back to the heart.
De-oxygenated blood enters the right atrium of the heart and flows into the right ventricle where it is pumped through the pulmonary arteries to the lungs. Pulmonary veins return the now oxygen-rich blood to the heart, where it enters the left atrium before flowing into the left ventricle. From the left ventricle the oxygen-rich blood is pumped out via the aorta, and on to the rest of the body.
[edit] Coronary circulation
Main article: Coronary circulation
The Coronary circulatory system provides a blood supply to the heart.
2007-11-30 02:54:31
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answer #2
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answered by abe 2
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From your heart the blood enters the aorta and goes to the left then filters around until it comes back into your heart on the right hand side.
2007-11-26 17:17:57
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answer #3
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answered by dozyllama 6
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Left.
2007-11-26 17:16:15
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answer #4
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answered by poppy vox 4
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It doesn't go in any single direction. It circulates in dozens of loops, all of which eventually pass through your heart.
2007-11-26 17:16:51
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answer #5
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answered by lithiumdeuteride 7
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clockwise
2007-11-26 17:16:40
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answer #6
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answered by Anonymous
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