capillary

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Related to capillary permeability: blood capillary, fenestrated capillaries, 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 ?
their ability to release kinins, which cause contraction of visceral smooth muscle, an increase in capillary permeability and hypotension).
Maldistribution due to venodilatation and hypovolaemia secondary to increased capillary permeability and plasma extravasation contribute to circulatory shock.
The Hylexin formula also helps to decrease capillary permeability, which minimizes the tendency of fragile capillaries to leak, and improves lymphatic circulation to reduce the appearance of puffiness that usually accompanies dark circles.
Sin Nombre virus, found in the United States, causes hantavirus pulmonary syndrome, which is characterized by increased pulmonary capillary permeability and pulmonary edema and can progress to severe respiratory distress syndrome and shock as a result of low cardiac output (4,5).
In addition, escin decreases capillary permeability.
Pulmonary edema occurs for a number of reasons, including a redistribution of bodily fluid that changes capillary permeability and increases pulmonary blood volume.
Increased extravascular lung water occurs in association with pulmonary oedema from increased pulmonary capillary permeability (acute lung injury or acute respiratory distress syndrome) or from an increase in pulmonary capillary pressure (hydrostatic or cardiogenic pulmonary oedema).