one cell thick
they connect arteries (from heart) to veins (to heart).
there are ALOT of them... every cell is within a few cells of one
Capillaries are tiny (extremely narrow) blood vessels, of approximately 5-20 micro-metres
(one micro-metre = 0.000001metre) diameter.
capillaries
glomerulus
Capillaries are referred to as the functional unit of the circulatory system.
in the capillaries
capillaries
capillaries
They have a thin basement membrane and an endothelial layer. The space between capillaries and gas in alveoli is very little.
Microcirulation consists of terminal arterioles connected to capillaries. The capillaries are connected to post-capillary venules which are connected to the veins,
very thin, often a cell thick
Cartilages and epithelial cells
The glomerulous
The Bowman's Capsule