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Anatomy Muscles

Quiz by Nate Ritterbush

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52 questions
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  • Q1
    Myofibrils are composed of ....
    Fasicles
    Actin and ATP
    Actin and Myosin
    Osteocyte and Myocyte
    120s
  • Q2
    Rigor mortis that occurs after death is due to
    lack of ATP
    to much actin
    lack of actin
    to much ATP
    120s
  • Q3
    This is an increase in the umber of motor units.
    synergist
    threshold stimulus
    activation energy
    recruitment
    120s
  • Q4
    Which of the following does not occur when a muscle undergoes atrophy?
    decrease in size of filaments
    decrease in mitochondria
    gain of fast twitch muscle
    decrease in capillaries
    120s
  • Q5
    A muscle cramp is due to the lack of
    ADP
    K ions
    ATP
    Na ions
    120s
  • Q6
    A partial but sustained contraction
    twitch
    muscle tone
    cramp
    atrophy
    120s
  • Q7
    Where are vesicles with neurotransmitters stored?
    motor end plate
    mitochondria
    axon
    motor neuron endings
    120s
  • Q8
    A muscle impulse travels across the sarcolemma and into the muscle fiber (cell) by means of
    endoplasmic reticulum
    transverse tubules (t tubules)
    mitochondria
    motor end plate
    120s
  • Q9
    Activities such as swimming and running would stimulate the development of what kind of fibers?
    slow twitch
    quickly fatigued
    fast twitch
    120s
  • Q10
    The amount of oxygen needed to convert lactic acid to glucose is
    acidosis
    oxygen debt
    anaerobic respiration
    aerobic respiration
    120s
  • Q11
    Smooth muscle contracts ________________ compared to skeletal muscle?
    slower
    faster
    voluntarily
    120s
  • Q12
    Multiunit smooth muscle is not which of the following
    found in blood vessels
    involuntary
    found in sheets
    has no rhythmicity
    120s
  • Q13
    What is a sarcomere?
    a muscle cell
    from Z line to M line
    a functional unit of a muscle
    a type of muscle
    120s
  • Q14
    Actin has binding sites for....
    ATP
    Na
    Ca
    myosin
    120s
  • Q15
    An all or none response means
    All muscle fibers contract none of the time
    a muscle fiber can only contract fully or not at all
    a muscle fiber can contract partially if needed
    120s

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