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5 Written questions

5 Matching questions

  1. Actin
  2. Skeletal muscle
  3. Aerobic respiration
  4. Fasciculus
  5. Hypertrophy
  1. a Attached to bones
    About 40% of the body weight
    Nuclei multiple and peripherally located
    Striated, Voluntary and involuntary (reflexes)
  2. b Bundle of muscle fibers ensheathed by perimysium
  3. c thin myofilaments composed to two strands of fibrous actin (F actin made of G actin units), tropomyosin molecules, and troponin molecules
  4. d Requires oxygen and breaks down glucose to produce ATP, carbon dioxide and water. More efficient than anaerobic; produces up to 38 molecules of ATP for each glucose
  5. e Increases in muscle size

5 Multiple choice questions

  1. thick myofilaments, many elongated molecules, two heavy myosin molecules to form a rod and two heads, four light myosin chains attached to the heads
  2. Most muscles have both but varies for each muscle
  3. depolarization, repolarizaion
  4. each axon terminal
  5. Walls of hollow organs, blood vessels, eye, glands, skin
    Most widely distributed type of muscle in the body
    Single nucleus centrally located
    Not striated, involuntary, gap junctions in visceral smooth

5 True/False questions

  1. Cardiac muscleHeart
    Single nucleus centrally located
    Striated, involuntary, intercalated disks with gap junctions


  2. Connective tissueNo relaxation between contraction


  3. Psychological fatiguemost common type, depends on emotional state of individual


  4. Skeletal muscle structureMyofilaments attach to dense bodies & dense areas, Sarcoplasmic reticulum not well developed and no transverse tubules, Shallow invaginations, caveolae, occur at intervals along the plasma membrane


  5. PerimysiumHeavier connective tissue surrounding muscle fibers with their endomysium.


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