A capillary is an extremely small blood vessel located within the tissues of the body, that transports blood from arteries to veins. Capillaries are most abundant in tissues and organs that are metabolically active. For example, muscle tissues and the kidneys have a greater amount of capillary networks than do connective tissues.
Capillaries are the smallest, most numerous branch of the blood vessels in the circulatory system. They are just about everywhere in the body (with notable exceptions, like the inner eye). Red blood cells pass through them and drop off oxygen in exchange for carbon dioxide, in most body tissues (except in lungs, where it's reverse). Other blood cells and blood products pass through them and out into the body tissues as well. The most famous job of the capillaries, though, is to be a drop-off/pick-up site for oxygen and carbon dioxide.
Capillaries are small blood vessels. We can't do without them, because our extremities (such as our fingers) are too small to be run by our normal veins and arteries (they're too big!). So we rely on capillaries to carry blood to and from our extremities.
peritubular capillaries
The capillaries are where the actual transfer of oxygen to the cells happen making it the absolute essential part of the system. The lungs/gills/skin whole job is to get oxygen into the bloodstream so that the capillaries have oxygen to transfer to the cells. The hearts whole job is to supply enough pressure to circulate the blood past the capillaries so it constantly has new oxygenated blood to transfer oxygen to the cells. --Ryan F
continuous capillaries continuous capillaries
Veins, Arteries (Capillaries are also blood vessels, but the main job is gas exchange).
The capillaries are where the actual transfer of oxygen to the cells happen making it the absolute essential part of the system. The lungs/gills/skin whole job is to get oxygen into the bloodstream so that the capillaries have oxygen to transfer to the cells. The hearts whole job is to supply enough pressure to circulate the blood past the capillaries so it constantly has new oxygenated blood to transfer oxygen to the cells. --Ryan F
Capillaries are the connection between arterioles and venules. The capillaries job is to enable the exchange of oxygen, water, carbon-dioxide, chemical substances and various nutrients to between blood and the surrounding tissue.
Capillaries The smallest of the blood vessels: capillaries.
Capillaries are the structures that connect arteries to veins.
Arteries "feed" the capillaries while veins drain the capillaries.
plmonary veins begin as capillaries and end as capillaries
Sinusoidal Capillaries
The thin walled blood vessels are called capillaries.