ch3p92-102

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ch3p92-102
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2015-09-28 20:33:05
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  1. ____ is the number of osmoles of solution per kg of water
    osmolality
  2. _____ is the number of osmoles per L of sulution
    osmolarity
  3. how many osmoles in 1 mole of dissolved particles
    1 osmole
  4. 1)what are most clinical calculations based on, osmolarity or osmolality
    2) what units are most concentrations expressed in?
    • 1) osmolarity
    • 2)milliosmoles per liter
  5. _____ is the ability of a solution to affect the fluid volume and pressure in a cell
    tonicity
  6. ____ cells have a lower concentration of nonpermeating solutes than ICF, causing it to swell.
    hypotonic cells
  7. a____cell has higher concentrations of nonpermeating solutes than ICF, causing it to lose water and shrivel
    hypotonic
  8. ____ cells have the same concentration of nonpermeating solutes as icf, causing no change in cell volume or shape
    isotonic
  9. ______ allows solute to bind to a carrier in the plasma membrane, which then changes shape and releases the solute to the other side
    carrier-mediated transport.
  10. 3 kinds of carriers/carrier mediated transports
    • 1) uniport: carries 1 type of solute
    • 2) contransport: moving 2 or more in same direction.
    • 3) countertransport: move 2 or more in oposite directions w/carrier protein ANTIPORT.
  11. 3 mechanisms carrier use
    • 1) facilitated diffusion
    • 2) primary active transport
    • 3) secondary active transport
  12. _____ is a mechanism carriers use to trasnport solutes through membrane down it's concentration gradient. No energy expenditure required.
    facilitated diffusion
  13. ____ is a mechanism carriers use to move substance through membrane up concentration gradient using APT energy
    primary active transport
  14. ____ is a mechanism carriers use to transport substances through the membrane requiring energy, but depends indirectly on ATP.
    secondary active transport
  15. name 4 functions of the NA+K- pump
    • 1) secondary active transport: Na+ concentration across membrane.
    • 2) regulates cell volume
    • 3) maintenance of a membrane potential
    • 4) heat production.
  16. how do vascular transports move molecules into a cell?
    endocytosis
  17. how do vesicles transport molecules out of a cell
    exocytosis
  18. list 3 forms of endocytosis
    • 1) phagocytosis
    • 2) pinocytosis
    • 3) receptor-mediated endocytosis
  19. define:
    Phagocytosis:
    Pintocytosis:
    recepter-mediated endoctosis:
    • Phagocytosis: eating cells
    • Pintocytosis: cell drinking in ECF
    • recepter-mediated endoctosis: receptors create clathrin-coated vesicles
  20. A_____ is a system of protein microfilaments, intermediated filaments, and microtubules in a cell, serving in physical support, cellular movement, and the routing of molecules and organelles to their destinations within the cell
    cytoskeleton
  21. ______are made of the protein actin. They form a fibrous mat called a terminal web on the cytoplasmic side of the plasma membrane.
    microfilaments
  22. ____ are stiffer and thicker than microfilaments, are made of keratin, and strengthen our hair and nails
    intermediate filaments
  23. ____ are made of protofilaments, which consist of long strands of tubulin
    microtubules
  24. _____ are internal structures of a cell that carry out specialized metabolic tasks.`
    organelles

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