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They do exist they are called actually just look in your book seriously wikipedia doesn't have all the answers

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What is an extremely thin-walled blood vessel?

Capillaries are an extremely thin walled blood vessel - they are only one cell thick, which allows for the easy exchange of gases between the blood and the body tissues. Because they are so thin however, this also makes them very fragile.


A thin blood vessel only one blood vessel wide?

They do exist they are called actually just look in your book seriously wikipedia doesn't have all the answers


What blood vessel tunic is thin of capillaries?

Tunica Externa


Is capillary a blood vessel?

Yes, the capillaries are the smallest kind of blood vessel, that facilitate the movement of substances (like oxygen and glucose) in and out of the blood through their very thin walls.


What are tiny blood vessels in which substances are exchanged between the blood and body cell?

The capillary is the only blood vessel where things can be exchanged because it is so thin (one cell thick). Capillaries have a single cell layer of squamous epithilium.


Is the blood vessel thin or thick walled towards the heart?

Thicker


Which blood vessel have thin walls and contain valves?

Veins


What is the thin-walled blood vessel that carries blood from the body tissues and lungs to the heart?

It is a vein.


What is the small blood vessel Small and thin and porous enough to exchange substances to tissue cell?

The circulatory system because the artery and the heart is their.


What blood vessel exchanges substances with a nephron?

Capillary. The thin walls allow diffusion of materials to pass from the blood flow into the nephron.


What is the term for a thin-walled blood vessel with valves that carries blood to the heart?

Veins are thin-walled blood vessels that carry blood to the heart. The valves in veins help prevent backflow. In contrast, arteries have thicker walls and no valves. They carry blood away from the heart.


What is the medical term meaning passing a thin tube through a blood vessel into the heart to detect abnormalities?

Cardiac catheterization