Capillary
capillaries
The aorta is the blood vessel with the widest lumen. In contrast, capillaries are the blood vessels with the narrowest lumen.
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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.
veins
The arteries, but to be exact, the aorta.
Capillaries are the smallest of all blood vessels.
red blood cells
Vessels with extremely thin walls over wich molecules and atoms are transported are called "capillaries".
there is not a certain kind of vessel; all the vessels stretch.
The only blood vessels that contain valves are veins.
yes they are