A&P Ch.3-7 Lecture

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  1. 3 types of movement through the plasma membrane:
    • Diffusion
    • osmosis
    • mediated transport
  2. Diffusion is when
    a substance moves from high concentration to low concentration
  3. Osmosis is when
    water moves from high concentration to low concentration
  4. What are the 3 types of mediated transport?
    • facilitated diffusion
    • active transport
    • secondary active transport
  5. Name two characteristics of facilitated diffusion
    • -uses the concentration gradient
    • -has channels
  6. Active transport and secondary active transport both require
  7. Active transport gets its energy from
    ATP; chemical energy
  8. Secondary active transport uses
    the concentration gradient as energy
  9. Concentration or density gradient is
    the difference between two points
  10. Viscosity is
    how easily a liquid flows
  11. What is osmotic pressure?
    looks at water pressure on membranes
  12. Isosmotic means
    equilibrium of solute
  13. Hyposmotic means
    greater concentration of solute
  14. Hyperosmotic means
    lesser concentration of solute
  15. Isotonic means
    the cell does not shrink or swell
  16. Hypertonic means
    the cell shrinks
  17. Another word for hypertonic is
  18. Hypotonic means
    the cell swells
  19. Another word for hypertonic is
  20. Mediated transport
    involves carrier proteins or channels in the cell membrane
  21. What are some characteristics of mediated transport?
    • Specificity
    • Competition
    • Saturation
  22. Mediated transport has specificity for
    a single type of molecule
  23. In mediated transport, competition
    is among molecules of similar shape
  24. In mediated transport, saturation is the
    rate of transport limited to number of available carrier proteins
  25. What are some rate limiting factors in the saturation of a carrier protein?
    • Number of reactants or molecules that need transport
    • Number of carrier protein channels
    • Competition
  26. What are the 4 types of tissue?
    • Epithelial
    • Connective
    • Muscle
    • Nervous
  27. What is a biopsy?
    removal of tissues for diagnostic purposes
  28. What is an autopsy?
    the organ/organism is dead, tissue is removed to backtrack to figure out what caused cell death
  29. What are the 3 germ layers?
    • Endoderm
    • Mesoderm
    • Ectoderm
  30. Name 5 characteristics of epithelial tissue
    • Basement membrane
    • Free surface
    • Avascular (no blood vessels, arteries, etc.)
    • Regenerates
    • Tightly packed
  31. What are 4 functions of epithelial tissue?
    • Protection
    • Diffusion/filtration
    • Secretion
    • Absorption
Card Set:
A&P Ch.3-7 Lecture
2013-01-26 05:32:22
Anatomy Physiology

Ch.3-7, Quiz 2
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