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5 Cards in this Set

  • Front
  • 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.
carry blood away from the herat to organs throughout the body.
return blood to the heart