Definition of circulatory system Circulatory system
We found 5 definitions of circulatory system from 4 different sources.
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What does circulatory system mean?
WordNet
Noun |
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| circulatory system - the organs and tissues involved in circulating blood and lymph through the body | ||
| cardiovascular system | ||
| vascular system the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant | ||
| organic structure, physical structure, body the external structure of a vehicle; "the body of the car was badly rusted" | ||
| liver large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity; secretes bile and functions in metabolism of protein and carbohydrate and fat; synthesizes substances involved in the clotting of the blood; synthesizes vitamin A; detoxifies poisonous substances and breaks down worn-out erythrocytes | ||
| pump, ticker, heart a mechanical device that moves fluid or gas by pressure or suction | ||
| blood stream, bloodstream the blood flowing through the circulatory system | ||
| lymph a thin coagulable fluid (similar to plasma but) containing white blood cells (lymphocytes) and chyle; is conveyed to the blood stream by lymphatic vessels | ||
| blood vessel a vessel in which blood circulates | ||
| vena, venous blood vessel, vein one of the horny ribs that stiffen and support the wing of an insect | ||
| venous blood system, venation (zoology) the system of venous blood vessels in an animal | ||
| lymph gland, lymph node, node the source of lymph and lymphocytes | ||
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Wiktionary 
- circulatory system (Noun)
The parts of a animal body comprising the heart, veins, capillaries and arteries. - circulatory system (Noun)
The parts of a machine responsible for the circulation of some fluid.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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circulatory system
The parts of a animal body comprising the heart, veins, capillaries and arteries.
Wikipedia 
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The circulatory system is the body system that brings blood to the body. The heart and all blood vessels make up the circulatory system.
Blood vessels that take blood away from the heart are arteries. Arteries get smaller as they go away from the heart. When arteries get very small, they are called "arterioles".
Blood vessels that take blood toward the heart are veins. The smallest veins are called venules. Veins get bigger as they go toward the heart.
Capillaries go between arteries and veins.
So blood moves: heart->artery->arteriole->capillary->venule->vein->heart. This is called circulation. There are two different "circulations" in the circulatory system. The "systemic circulation" is how blood goes to most of the body. The "pulmonary circulation" is how blood goes through the lungs. (Pulmonary means about the lungs.)
Systemic circulation.
Blood that comes from the left side of the heart is full of oxygen and nutrients. Nutrients are substances that your body needs to live, like protein, fat, carbohydrates, vitamins, and minerals. This blood brings the oxygen and nutrients to your body.
This blood in "systemic" arteries that is full of oxygen and nutrients is "systemic arterial blood". It is sometimes just called "arterial blood".
The biggest systemic artery in the body is the aorta. This is the large blood vessel that comes out of the heart. Smaller arteries branch off from the aorta. These arteries have smaller arteries that branch off from them. The smallest arteries t
