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A&P Test 2 (2)
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the plasma membranes of endothelial cells form a continuous tube that is interrupted only by intercellular clefts
Continuous capillaries
small pores (holes) ranging from 70 to 100 nm in diameter
Fenestrated capillaries
have very large intercellular clefts that allow proteins and in some cases even blood cells to pass from a tissue into the bloodstream.
Sinusoids
drain the capillary blood and begin the return flow of blood back toward the heart
Venules
They are the smallest venules, measuring 10 um to 50 um in diameter, and have loosely organized intercellular junctions
Structure of Venules
sites of exchange of nutrients and wastes and white blood cell emigration
function of venules
very thin walls relative to their total diameter. They range in size from 0.5 mm in diameter
structure of veins
Return blood to heart, facilitated by valves in limb veins.
function of veins
Author
hey_itsdarra
ID
317821
Card Set
A&P Test 2 (2)
Description
test 2
Updated
2016-03-24T02:33:07Z
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