capillary

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Related to Capillary beds: continuous capillaries

capillary

(kăp`əlĕr'ē), microscopic blood vessel, smallest unit of the circulatory systemcirculatory system,
group of organs that transport blood and the substances it carries to and from all parts of the body. The circulatory system can be considered as composed of two parts: the systemic circulation, which serves the body as a whole except for the lungs, and the
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. Capillaries form a network of tiny tubes throughout the body, connecting arterioles (smallest arteriesartery,
blood vessel that conveys blood away from the heart. Except for the pulmonary artery, which carries deoxygenated blood from the heart to the lungs, arteries carry oxygenated blood from the heart to the tissues.
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) and venules (smallest veinsvein,
blood vessel that returns blood to the heart. Except for the pulmonary vein, which carries oxygenated blood from the lungs to the heart, veins carry deoxygenated blood. The oxygen-depleted blood passes from the capillaries to the venules (small veins).
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). Through the thin capillary walls, which are composed of a single layer of cells, the nutritive material and oxygen in the blood pass into the body tissues, and waste matter and carbon dioxide in turn are absorbed from the tissues into the bloodstream.

capillary

[′kap·ə‚ler·ē]
(anatomy)
The smallest vessel of both the circulatory and lymphatic systems; the walls are composed of a single cell layer.
(geology)
A fissure or a crack in a formation which provides a route for flow of water or hydrocarbons.

capillary

1. (of tubes) having a fine bore
2. Anatomy of or relating to any of the delicate thin-walled blood vessels that form an interconnecting network between the arterioles and the venules
3. Physics of or relating to capillarity
4. Anatomy any of the capillary blood vessels
5. a fine hole or narrow passage in any substance
References in periodicals archive ?
It has been reported that pre-warming increases the flow of blood through the capillary beds sevenfold.
From a technical perspective, we are not looking at the capillary beds but rather into the vasculature, which ideally correlates to the patient's actual hematocrit determined with a vascular blood draw.
This enzyme is fixed in the capillary beds, the small blood vessels, and as the lipids pass by they get hydrolyzed, or broken down, by this enzyme.
When it senses a cold core temperature, the system shuts down the body's radiators -- capillary beds just under the skin surface -- that allow for heat transfer.
But radiation damage, a crushing injury or diabetes can destroy the small capillary beds, limiting oxygen flow and subsequent healing.