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Capillaries

The smallest vessels in the circulatory system that are located within the tissues of the body, they transfer blood from the arteries, through the tissues to drop of nutrients and pick up waste and back to the veins.

1,213 Questions

Does everyone pass gas?

Yes, everyone

There are two types of people those who do fart, and those who lie and say they don't fart.

Nutrient exchange?

Nutrient exchange is a continuous cycle, constantly supplying the body with oxygen and nutrients while removing carbon dioxide and metabolic waste.

Red blood cells are the cells in the blood that carry oxygen from the lungs to the body tissues through blood pumped by the heart. As they travel away from the heart, they traverse smaller and smaller arteries, finally arriving at the collections of microscopic blood vessels called capillaries.

Capillaries contain a high concentration of oxygen and nutrients, while the surrounding tissues contain a lower concentration. Through a process called diffusion, these particles leave the capillaries and enter the body's tissues.

Conversely, the body's tissues contain high concentrations of carbon dioxide and metabolic waste, while the capillaries contain a lower concentration. Waste products diffuse from the tissues into the capillaries and from there are carried by the venous system back toward the heart.

The waste products are eventually eliminated from the bloodstream by the liver, kidneys, and lungs.

Reviewed By

Review Date: 10/10/2008

Larry A. Weinrauch, MD, Assistant Professor of Medicine, Harvard Medical School, and Private practice specializing in Cardiovascular Disease, Watertown, MA. Review provided by VeriMed Healthcare Network.

What is the smallest of the three veins capillaries and arteries?

Capillaries. They are the microscopic tubes that connect the veins and the arteries.

What two parameters are responsible for creating the movement filtration and reabsorption of fluid across the capillary wall of a sprained ankle?

Fluids in organisms often move because of an osmotic gradient. Some materials move through cell membranes because of active transport which takes energy. Capillaries tend to leak out fluid, probably because of the blood pressure of the system and they don't have many cell layers. . The proteins in the blood actually act to create an osmotic pressure to bring back into the veins/venules this leaked fluid. That's why starving children... who are starving due to inadequate protein intake often look bloated.... but that edema is because of the leakage of water from the capillaries which remains in the tissues.

What were the different structures at Buenaventura?

what were some of the different structures at buenaventura

Oxygen passes into the capillaries that surround these sac?

Oxygen passes into the capillaries that surround the alveoli. The thin walls of the capillaries make this diffusion easier.

What does blood cell functions include within the capillaries?

The function of the capillaries is to distribute oxygen carried on the hemoglobin of the red cells to all the cells of the body. The blood also carries nutrients to all the cells of the body. Blood comes to the capillaries through the arteries, then is sent back to the heart via the veins. Capillaries are also the waste disposal system for the cells of the body. Water, carbon dioxide, and other wastes are uploaded to the blood to be disposed of in the kidneys, lungs and liver.

What is a chemical that stimulates the dilation of capillaries?

There are many vasodilators. These include histamines, nitric oxide, CO2, H+, K+, adenosine and epinephrine.

What tissue makes up the lymphatic capillaries?

The lymphatic capillaries are made up of endothelial cells, which are thin-walled cells that line the inside of the vessels. These cells have small openings that allow fluid and molecules to enter the capillaries.