Definition of capillary in English English dictionary
Any of the small blood vessels that connect arteries to veins. Their walls are composed of a single layer of cells which allows molecules such as oxygen, water and lipids to pass through them by diffusion and enter the tissues. Waste products such as carbon dioxide and urea can diffuse back into the blood to be carried away for removal from the body
Capillaries are small blood vessels with thin walls through which substances can pass in and out of the bloodstream
a minute vessel connecting arterioles and venules, the walls of which act as a membrane for interchange of various substances between blood and tissue fluid The walls consist of thin endothelial cells through which dissolved substances and fluids can pass
the smallest of the body's blood vessels Oxygen and glucose pass through capillary walls and enter the cells Waste products such as carbon dioxide pass back from the cells into the blood through capillaries
a tube of small internal diameter; holds liquid by capillary action any of the minute blood vessels connecting arterioles with venules long and slender with a very small internal diameter; "a capillary tube"
A capillary is the narrowest type of blood vessel in the circulatory system Their walls are only one cell layer thick, so that oxygen and nutrients can pass through them into the surrounding tissues Capillaries also transport waster material (e g urea and carbon dioxide) to venules for ultimate excretion
A minute, thin-walled vessel; particularly one of the smallest blood vessels connecting arteries and veins, but used also for the smallest lymphatic and biliary vessels
= microscopically small blood vessels connecting the arterial and the venous side of the circulatory system and in which the exchange of substances takes place
Capillaries are tiny blood vessels in your body. capillaries the smallest type of blood vessel (=tube carrying blood) in the body. Any of the minute blood vessels that form networks where the arterial and venous circulation (see artery, vein) meet for exchange of oxygen, nutrients, and wastes with body tissues. Capillaries are just large enough for red blood cells to pass through in single file. Their thin walls are semipermeable, allowing small molecules to pass through in both directions. The smallest lymphatic vessels and minute bile channels in the liver are also called capillaries
Resembling a hair; fine; minute; very slender; having minute tubes or interspaces; having very small bore; as, the capillary vessels of animals and plants
The smallest of the body's blood vessels Capillaries have walls so thin that oxygen and glucose can pass through them and enter the cells, and waste products such as carbon dioxide can pass back into the blood to be carried away and taken out of the body Sometimes people who have had diabetes for a long time find that their capillaries become weak, especially those in the kidney and the retina of the eye See also: Blood vessels
Any of the small blood vessels that connect arterioles to venules. Their walls are composed of a single layer of cells which allows molecules such as oxygen, water and lipids to pass through them by diffusion and enter the tissues. Waste products such as carbon dioxide and urea can diffuse back into the blood to be carried away for removal from the body
Microscopic blood vessels where the gas exchange takes place between the bloodstream and the tissues or the air in the lungs
Due to the distance between plates on size of the hole capillary action occurs In soil capillary action raises water as much as 20' to the roots of plants In clay soil capillaries freeze and form ice cubes in winter
The tendency of certain liquids to travel, climb or draw into tight crack-like interface areas due to such properties as surface tension, wetting, cohesion, adhesion and viscosity
the process by which water rises through rock, sediment or soil as it is "pulled" upward by the attraction of water molecules to each other and to other substances
Movement of water along microscopic channels This movement is the result of two forces: the adhesion and absorption of water to the walls of the channels; and cohesion of water molecules to each other
The effect of surface tension that draws a liquid into a small opening So a combination of natural causes that forces molten solder to flow against gravity between closely spaced solid surfaces
the movement of a liquid with or against the law of gravity, into a very small opening, usually tubular in shape, or as in a surface of closely matted very fine fibers (Liquid penetration and flow rate in porous surfaces is dependent on pressure, surface tension, and radius of the opening, among other factors)
A foreign object lodged in the trap causes loss of trap seal The object acts as a wick and carries the water from the trap over the outlet side into the waste pipe until the seal is ineffective Rags, string, lint, and hair commonly cause this problem
A function of hydrogen bonding in the water molecule results in the movement of water into small openings due to the attraction between the liquid and the walls of the opening Water can be drawn upwards by capillary action
(1) The action by which water is drawn around soil particles because there is a stronger attraction between the soil particles and the water molecules themselves (2) The movement of water within the interstices of a porous medium due to the forces of adhesion, cohesion, and surface tension acting in a liquid that is in contact with a solid Synonymous with the terms Capillarity, Capillary Flow, and Capillary Migration
when the surface of a liquid is in conact with a solid, the liquid is elevated or depressed depending upon the relative attraction of the molecules of the liquid for each other or for those of the solid This is similar to how plants seemingly defy gravity when they transport liquid from the roots upward through the plant
The force that results from greater adhesion of a liquid to a solid surface than internal cohesion of the liquid itself and that causes the liquid to be raised against a vertical surface, as water is in a clean glass tube. It is the force that allows a porous material to soak up a liquid
The smallest blood vessels Oxygen and nutrients leave the bloodstream through capillaries to get into the body Gases from the alveoli enter the bloodstream through capillaries in the lungs
any of the minute blood vessels, averaging 0 008 millimeter in diameter, carrying blood and forming the capillary system Capillaries connect the ends of the smallest arteries with the beginnings of the smallest veins
Small, narrow blood vessels that form bridges between arteries, which carry oxygen-rich blood away from the heart, and veins, which bring oxygen-depleted blood back to the heart Capillaries carry blood to and from cells in the body, allowing for exchange of oxygen, nutrients, carbon dioxide, and cell waste
tiny blood vessels that form the most distal part of the circulatory system Arteries branch into ever smaller vessels, finally ending in the capillaries, which connect with the smallest branches of the veins Capillaries deliver oxygen and nutrients to and remove waste products from the body's cells
The tiniest blood vessels; capillary networks connect the arterioles (the smallest arteries) and the venules (the smallest veins) (Read about "Vascular System")