Chapter 8 Physiological Psychology Study Quiz

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Psychology Quizzes & Trivia
Chapter 8: Control of Movement

  
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  • 1. 
    Which of these is not a category of muscles?
    • A. 

      Skeletal

    • B. 

      Smooth

    • C. 

      Cardiac

    • D. 

      Rough


  • 2. 
    Flexion muscles _________ by  _____________a flexor muscle.
    • A. 

      Draw in a limb; relaxing

    • B. 

      Draw in a limb; contracting

    • C. 

      Extend a limb; relaxing

    • D. 

      Extend a limb; contracting


  • 3. 
    Which of these is not true:
    • A. 

      Extrafusal fibers exert force

    • B. 

      Intrafusal fibers feed extrafusal fibers ATP

    • C. 

      Afferent fibers: report length of intrafusal fibers

    • D. 

      Efferent fibers: adjust sensitivity of afferent fibers


  • 4. 
    Which of these is true?
    • A. 

      Myosin are thick filaments, anchored to Z-lines

    • B. 

      Myosin are thin filaments, anchored to Z-lines

    • C. 

      Myosin are thick filaments, anchored by titin fibers

    • D. 

      Myosin are thin filaments, anchored by titin fibers


  • 5. 
    The ___________ moves the ___________ using ATP.
    • A. 

      Actin; myosin

    • B. 

      Actin; z-line

    • C. 

      Myosin; titin fibers

    • D. 

      Myosin; actin


  • 6. 
    Which of the following is not true?
    • A. 

      A motor unit is a single motor neuron and all the muscle fibers it controls

    • B. 

      Each muscle has only one motor unit

    • C. 

      A motor unit can have several muscle fibers

    • D. 

      Each motor unit has only one motor neuron


  • 7. 
    The neuromuscular junction is the synapse formed between ___________ and ___________.
    • A. 

      Alpha motor neuron axon; motor unit

    • B. 

      Motor unit; muscle

    • C. 

      Alpha motor neuron axon; muscle fiber

    • D. 

      Muscle unit; muscle fiber


  • 8. 
    Which of the following is not true:
    • A. 

      Precision of muscle control is directly proportional to motor unit size

    • B. 

      ACh is the primary neuromuscular junction neurotransmitter

    • C. 

      The leg has large motor units

    • D. 

      Release of ACh triggers myosin to pull further apart


  • 9. 
    Which of the following is untrue:
    • A. 

      Smooth muscles are controlled by the central nervous system

    • B. 

      Multiunit smooth muscles are normally inactive

    • C. 

      Single-unit smooth muscles exhibit rhythmic contractions

    • D. 

      Cardiac muscles look like striated muscles but act like single-unit smooth muscles due to their rhythmic contractions


  • 10. 
    ___________ ions play a major regulatory role in the contraction of both smooth and skeletal muscles.
    • A. 

      ACh

    • B. 

      Calcium

    • C. 

      Hydrogen

    • D. 

      Oxygen


  • 11. 
    Your body will stop trying to lift a fridge before the muscles rip because ____________.
    • A. 

      Intrafusal fibers activate and inhibit agonist muscle fibers

    • B. 

      Golgi tendon organ receptors activate and inhibit agonist muscle fibers

    • C. 

      Extrafusal fibers activate and inhibit agonist muscle fibers

    • D. 

      None of the above -- people routinely pull a muscle from straining it too hard


  • 12. 
    Dorsal horn is to ____________ as ventral horn is to ____________
    • A. 

      Efferent; afferent

    • B. 

      Afferent; efferent


  • 13. 
    Your leg kicking out when the doctor hits it with his mallet is an example of a ______________.
    • A. 

      Monosynaptic reflex in which the alpha motor neuron quickly contracts muscle fibers

    • B. 

      Monosynaptic reflex in which synapses between sensory axons, interneurons, and motor neurons are activated

    • C. 

      Polysynaptic reflex in which the alpha motor neuron quickly contracts muscle fibers

    • D. 

      Polysynaptic reflex in which synapses between sensory axons, interneurons, and motor neurons are activated


  • 14. 
    The purpose of the gamme motor neuron is _____________________.
    • A. 

      To loosen intrafusal muscle fibers when the muscle contracts, so that the muscle can continue to react to the environment even when contracted

    • B. 

      To tighten intrafusal muscle fibers when the muscle contracts, so that the muscle can continue to react to the environment even when contracted

    • C. 

      To loosen extrafusal muscle fibers when the muscle contracts, so that the muscle can continue to react to the environment even when contracted

    • D. 

      To tighten extrafusal muscle fibers when the muscle contracts, so that the muscle can continue to react to the environment even when contracted


  • 15. 
    The motor homunculus is...
    • A. 

      A map of the body in which body parts are proportional to the surface area they take up

    • B. 

      A map of the body in which body parts are proportional to the number of motor units in them.

    • C. 

      A map of the body in which body parts are proportional to the sensitivity of the body part.

    • D. 

      A map of the body in which body parts are proportional to the size of the person


  • 16. 
    Which of the following is not true about axons from the primary motor cortex as they descend to the spinal cord:
    • A. 

      Lateral group axons control independent limb movements

    • B. 

      Lateral group axons control eye coordination

    • C. 

      Ventromedial group axons control gross limb movements

    • D. 

      Ventromedial group axons control sneezing


  • 17. 
    Which of the following is not true for Parkinson's Disease?
    • A. 

      It involves muscle rigidity, resting tremor, and slow movements

    • B. 

      It's caused by damage to dopamine neurons

    • C. 

      Stereotaxic lesions of the globus pallidus may cure Parkinson's Disease

    • D. 

      It's treated with dopamine-secreting neuron transplants


  • 18. 
    Which of the following is not true of Huntington's Disease?
    • A. 

      It involves uncontrollable jerky movements

    • B. 

      It's caused by degeneration of the caudate nucleus and putamen

    • C. 

      It's hereditary

    • D. 

      It involves loss of cells associated with glutamate


  • 19. 
    Which of the following is untrue of apraxias:
    • A. 

      Callosal apraxia involves inability to perform movements with left hand to a verbal request

    • B. 

      Sympathetic apraxia causes paralysis of the left arm and hand, but not right arm and hand

    • C. 

      Left parietal apraxia involves sifficulty in initiating movements to verbal requests

    • D. 

      Constructional apraxias involve difficulty drawing pictures or assembling objects


  • 20. 
    Damage to the cerebellum results in ________________.
    • A. 

      Death

    • B. 

      Jerky, erratic, and uncoordinated movements

    • C. 

      Paralysis

    • D. 

      More death


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