capillary

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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 ?
Other research could focus on the use of agents to reduce pulmonary capillary permeability and provide membrane stabilization, such as corticosteroids, oxygen free-radical scavengers, and cyclo-oxygenase inhibitors.
Several theories have been proposed for increased capillary permeability, obstruction of lymphatics by hyaluronidase-albumin complexes, and impairment of free water secretion.
their ability to release kinins, which cause contraction of visceral smooth muscle, an increase in capillary permeability and hypotension).
In our clinical research, [sup][11] we found that CT perfusion, especially pulmonary capillary permeability and other metrics allowed for significantly earlier diagnosis of RILI, as well as improvement in diagnostic accuracy of this entity.
2) The pathophysiology of anemic retinopathy seems to be related to retinal hypoxia, venous stasis, angiospasm and increased capillary permeability.
Venoactive drugs decrease venous tone, thereby reducing capillary permeability and the tendency to oedema.
It has been suggested that Pycnogenol may bind to the blood vessel wall proteins and mucopolysaccharides and produce a capillary 'sealing' effect, leading to a reduced capillary permeability and oedema formation.
Mediators released during anaphylaxis produce peripheral vasodilatation and increase capillary permeability resulting in a mixed distributive-hypovolaemic shock pattern (1).
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).