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5 Cards in this Set

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  • Back
what are capillaries
Microscopic vessels that form a network among the tissue cells, such that no substance has to diffuse far to enter or leave a cell.
Convey blood between arteries and veins
open circulatory system
Blood is pumped through open-ended vessels and flows out among the cells.
No distiction between blood and interstitial fluid.
Examples: Insects
Closed Circulatory System (Cardiovascular System)
consists of a heart and a network of tubelike vessels.
Blood confined to vessels.
Does not mix with interstitial fluid.
Arteries
carry blood away from the herat to organs throughout the body.
Veins
return blood to the heart