blood capillary overview fig 23 13 p 477 n.
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Blood & Capillary Overview (Fig 23.13; p. 477). http://facstaff.gpc.edu/~jaliff/anablves.htm. http://focus.aps.org/story/v20/st21. Blood. Human Circ. System has 4-6 L. Cellular Elements represent 45% of total blood volume. RBCs & WBCs Plasma (Straw colored liquid)

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blood capillary overview fig 23 13 p 477

Blood & Capillary Overview(Fig 23.13; p. 477)

http://facstaff.gpc.edu/~jaliff/anablves.htm

http://focus.aps.org/story/v20/st21

blood
Blood
  • Human Circ. System has 4-6 L.
  • Cellular Elements represent 45% of total blood volume.
    • RBCs & WBCs
    • Plasma (Straw colored liquid)
    • Platelets (part of bone marrow cytoplasm)
plasma
Plasma
  • Makes up over 1/2 of blood volume.
  • 90% is H2O
  • 10% is inorganic salts (ions, proteins, etc)
    • Ions = osmotic balance / pH balance
    • Proteins =
      • Blood clotting (fibrinogen)
      • Immunity (immunoglobulins)
capillaries
Capillaries
  • Thin enough for Transport of Substances between Blood and Interstitial Fluid.
  • Composed of epithelial cells.
transport of substances fig 23 12b p 476
Transport of Substances(Fig. 23.12B; p. 476)
  • O2 & CO2 = Diffusion
  • Lgr. Molecules = Vesicles/Endocytosis /Exocytosis
  • H2O & Solutes = “Leaky clefts”
  • Proteins = Too Big to pass through
forces transport of substances
Forces Transport of Substances
  • Blood Pressure - active force pushing fluid outward.
  • Osmotic Pressure - active force pulling fluid inward

(*  [solute] in blood ).