groupechapter3.txt

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Anonymous
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260676
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groupechapter3.txt
Updated:
2014-02-06 22:29:09
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Description:
chapter 3 topic 5 and 6
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  1. passive transport
    physical process
  2. diffusion
    atoms, molecules, and ions in a liquid or air solution move from higher concentration to lower concentration
  3. osmosis
    H2O molecules moves through membrane towards solution with greater osmotic pressure
  4. concentration gradient
    the difference of higher concentration to an area of lower concentration
  5. diffusion equilibrium
    random movements continue but there is no further net movement; becomes uniform
  6. osmolarity
    total solute concentration of body fluid
  7. physiological steady state
    concentrations are unequal but are stable
  8. diffusible substances
    solutes
  9. facilitated diffusion
    ions move from higher concentration to lower concentration
  10. osmotic pressure
    ability of osmosis to generate enough pressure to lift volume of water
  11. hypertonic
    excessive pressure
  12. hypo tonic
    under; below pressure
  13. isotonic
    same pressure
  14. filtration
    separation of solids from water
  15. active transport
    physiological processes
  16. phospholipid
    two fatty acids plus phosphate group
  17. gate/channel
    a mechanism can close or open some of the channels in cell membranes where ions pass
  18. Na/K pump
    transports Na ions out; K ions into cells
  19. endocytosis
    particles that are too big are conveyed in a vesicle and form a section of the cell membrane
  20. pinocytosis
    H2O(liquid)
  21. phagocytosis
    solids
  22. receptor mediated exocytosis
    proteins
  23. transcytosis
    moves substances across

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