What is a definition for capillary?
The smallest type of blood vessel. A capillary connects an arteriole (small artery) to a venule (small vein) to form a network of blood vessels in almost all parts of the body. The wall of a capillary is thin and leaky, and capillaries are involved in the exchange of fluids and gases between tissues and the blood.
What is capillary and capillarity in physics?
Capillary action (sometimes called capillarity, capillary motion, capillary effect, or wicking) is the process of a liquid flowing in a narrow space without the assistance of, or even in opposition to, any external forces like gravity.
What is capillary and its example?
Answer: Water moving up in straw or glass tube against gravity, tears moving through tear ducts, water moving through a cloth towel against gravity. These are examples of capillary action.
What is a real life example of capillary action?
Examples of capillary action include the uptake of water in paper and plaster (two porous materials), the wicking of paint between the hairs of a paintbrush, and the movement of water through sand.
What is the definition of Venule?
Definition of venule : a small vein especially : any of the minute veins connecting the capillaries with the larger systemic veins.
What is capillary tube in physics?
Capillary tubing or capillary tubes are very thin tubes made of a rigid material, such as plastic or glass in which a liquid flows up into the tubes against gravity in a process called capillary action (capillarity).
What is capillary physics class 11?
Hint: Capillarity is a phenomenon by which the liquid moves without the help of gravity. The liquid level rises to some height against the gravitational force, through the narrow tube. This action is due to the phenomenon of surface tension of the liquid.
What is capillary explain the capillary action?
Capillary action is the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion and surface tension. It is the ability of a liquid to flow in narrow spaces without the assistance of, and sometimes in opposition to, external forces like gravity.
What is capillary action in science?
Capillary action is important for moving water (and all of the things that are dissolved in it) around. It is defined as the movement of water within the spaces of a porous material due to the forces of adhesion, cohesion, and surface tension.
What is capillary rise Physics 11?
Capillarity rise is due to the tendency of liquids to rise in tubes of small diameter in opposition to the gravity. Capillarity fall is due to the depression of liquids in tubes of small diameter in opposition to gravity. The capillary action arises due to the adhesive and cohesive forces.
What is a venule and its function?
A venule is a very small blood vessel in the microcirculation that allows blood to return from the capillary beds to drain into the larger blood vessels, the veins.