PhysLab Final Metab & Histology

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PhysLab Final Metab & Histology
2011-12-04 18:37:56
Phys Lab Final

Metabolism Phys Lab Final
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  1. Process of breaking down glycogen
  2. Glycogen stored in liver used to provide ___ but glycogen stored in muscle used to provide ___
    • blood glucose
    • fuel w/in that muscle
  3. FAs can be ___ for energy, or combined w/___ to form new TGs which are stored as fat
    • oxidized
    • glycerol
  4. Catabolism of glycerol and FAs, which produces CO2 as waste product
  5. Diff b/w direct and indirect calorimetry
    • Direct: amt of heat produced by metabolism
    • Indirect: calculation of amt of heat produced by metabolism by using the direct relationship b/w O2 consumed and the heat produce by metabolism
  6. One MET equals ____ mL O2/kg/min
  7. Diff b/w basal metabolic rate (BMR) and resting met rate (RMR)
    • BMR: resting conditions, 12 hr fast
    • RMR: resting conditions, 4-8 hr fast
  8. Metabolic rate influenced by:
    physical activity
    body ___
    body ___
    body ___
    ___ levels
    food intake
    • body surface area (BSA)
    • body composition
    • body temp
    • hormone
  9. Ratio of VCO2/VO2
    Respiratory exchange ratio (R)
  10. R is around ___ during carb oxidation and __ during fat oxidation
    • 1
    • .7
  11. What could skew R so it wouldn't tell us what is being used as fuel?
    Hyperventilation, which would increase CO2 levels and therefore skew the ratio
  12. Absolute oxygen consumption (VO2abs in L/min) =
    conditions for volume (3)
    [FIO2 x VI] - [FEO2 x VE]

    • (VI=VE and must be corrected to STPD and in L/min)
    • or
    • =V(FIO2- FEO2)
    • =V(.2093-FEO2)
  13. constant FIO2 =
  14. How to correct vol to STPD
    x .91
  15. Relative O2 consumption (VO2rel in mL/kg/min)
    • VO2abs x 1000 mL
    • --------------------
    • body weight (kg)
  16. A larger person will burn ___ kcal when doing weight-bearing exercise than a smaller person. A larger person will burn ___ kcal when doing non-weight bearing exercise than a smaller person. B/c __.
    • more
    • same amt
    • weight affects intensity of exercise
  17. Caloric expenditure (kcal/min) =
    VO2 x 5kcal/L
  18. Respiratory exchange ratio =
    • VCO2abs
    • -----------
    • VO2abs
  19. Largest factor of BMR
  20. thyroxine, epinephrine, growth hormone all
    ____ BMR
  21. Sleep ___ BMR
  22. 4 types of tissue
    • epithelial
    • muscle
    • connective
    • nervous
  23. Is epithelial tissue vascular or avascular? Innervated or not?
    Avascular; innervated
  24. Epithelial cells can be simple or stratified, which means:
    • simple: 1 layer
    • stratified: 2+ layers
  25. Cells which are adapted for diffusion or protection and have disc shaped nucleus
    Squamous ep cells
  26. Simple squamous ep cells are for ___ and are found in ____.
    Stratified squamous ep cells are for ___ and are found in ____.
    • diffusion; capillaries, lungs, lymph vessels
    • protection; esophagus, mouth, skin
  27. Skin has ___ ___ cells on upper layer but ___ and ___ cells on lower layer
    • stratified squamous ep
    • cuboidal, columnar ep
  28. ___ cells are cube shaped, have rounded nucleus, and are active in transport; found in kidney tubules
    cuboidal ep cells
  29. ___ tall thin cells which are for secretion and absorption and have elongated nucleii; found in stomach and intestines
    columnar ep cells
  30. 2 types of muscle cells are smooth, cardiac, and skeletal. which are straited?
    cardiac, skeletal
  31. Long, cylindrical cells which are multinucleated
    skeletal muscle
  32. Mononucleated cells which have intercalated disks and are short and branched
    Cardiac muscle
  33. Spindle shaped cells which are mononucleated and have no striations
    smooth muscle
  34. _____ cells are diff from neurons and insulate and protect; also non-conducting
  35. Ability of a tissue to adapt to stressors
  36. Endurance trainers increasing # of mitochondria in skeletal muscle tissue is an example of:
  37. flux =