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Exercise Physiology Exam 2

64 Questions
Exercise Physiology Exam 2

Quiz based on the notes for exam 2Note: Any question that says "(check all that apply)" means that thier is MORE THAN ONE answer to the question!

Questions and Answers
  • 1. 
    Along with the nervous system, which other system controls the internal environment. (homeostasis)
    • A. 

      Muscular

    • B. 

      Lymphatic

    • C. 

      Endocrine

    • D. 

      Digestive

  • 2. 
    The peripheral nervous system consists of the brain and spinal cord.
    • A. 

      True

    • B. 

      False

  • 3. 
    Afferent fibers are fibers that transmit impulses from receptors to the CNS
    • A. 

      True

    • B. 

      False

  • 4. 
    Skeletal muscles are innervated by neurons in the motor division.
    • A. 

      True

    • B. 

      False

  • 5. 
    • A. 

      True

    • B. 

      False

  • 6. 
    Which structure in the neuron generates the action potential?
    • A. 

      Axon terminal

    • B. 

      Axon hillock

    • C. 

      Cell body

    • D. 

      Node of Ranvier

  • 7. 
    In the peripheral nervous system, the myelin sheath is formed by olegodendrocytes.
    • A. 

      True

    • B. 

      False

  • 8. 
    Post-ganglionic fibers of the autonomic nervous system are non myelinated.
    • A. 

      True

    • B. 

      False

  • 9. 
    Generally, what is the charge of a neurons at rest?
    • A. 

      -40 to -65 mv

    • B. 

      -50 to -70 mv

    • C. 

      -30 to -60 mv

    • D. 

      -40 to 75 mv

  • 10. 
    Which is true about the sodium-pottasium pump?
    • A. 

      It pumps 2 K+ in and 3 Na+ out

    • B. 

      It pumps 1 K+ in and 3 Na+ out

    • C. 

      It pumps 3 K+ in and 2 Na+ out

    • D. 

      It pumps 4 K+ in and 2 Na+ out

    • E. 

      It pumps 3 Na+ in and 2 K+ out

  • 11. 
    • A. 

      Inside the axon becomes more positive due to an influx of pottasium

    • B. 

      Inside the axon becomes more negative due to an influx of pottasium

    • C. 

      Inside the axon becomes more positive due to an influx of sodium

    • D. 

      Inside the axon becomes more negative due to an influx of sodium

    • E. 

      None of the above

  • 12. 
    What happens during repolarization? (check all that apply)
    • A. 

      Sodium leaves the cell rapidly

    • B. 

      Pottasium leaves the cell rapidly

    • C. 

      Sodium channels close

    • D. 

      None of the above

  • 13. 
    Which neurological disease destroys the myelin sheath of axons?
    • A. 

      Multiple Sclerosis

    • B. 

      Parkinson's disease

    • C. 

      Huntington's disease

    • D. 

      Epilepsy

    • E. 

      None of the above

  • 14. 
    • A. 

      True

    • B. 

      False

  • 15. 
    ______ and  _____ causes depolarization of the postsynaptic membrane. (neurotransmitter and ion) (check all that apply)
    • A. 

      Potassium (K+)

    • B. 

      Sodium (Na+)

    • C. 

      Gaba

    • D. 

      Acetylcholine

    • E. 

      Norepinephrine

  • 16. 
    The synapse of a neuron is where synaptic vesicles are stored.
    • A. 

      True

    • B. 

      False

  • 17. 
    The dendrites are the receptive regions of the neuron.
    • A. 

      True

    • B. 

      False

  • 18. 
    • A. 

      True

    • B. 

      False

  • 19. 
    Which type of post-synaptic potential causes hyperpolarization
    • A. 

      Excitatory post-synaptic potential

    • B. 

      Inhibitory post-synaptic potential

    • C. 

      Action potential

    • D. 

      Both can cause hyperpolarization

  • 20. 
    The gaps between schwann cells are called nodes of Ranvier.
    • A. 

      True

    • B. 

      False

  • 21. 
    Which type of proprioceptors are found in ligaments and around joints.
    • A. 

      Free nerve endings

    • B. 

      Muscle spindles

    • C. 

      Pacinian corpuscles

    • D. 

      Golgi-type receptors

  • 22. 
    Which proprioceptor detects rate of joint rotation?
    • A. 

      Golgi-type receptors

    • B. 

      Golgi-tendon organ

    • C. 

      Muscle spindles

    • D. 

      Pecinian corpuscle

  • 23. 
    • A. 

      True

    • B. 

      False

  • 24. 
    • A. 

      True

    • B. 

      False

  • 25. 
    • A. 

      Muscle spindle

    • B. 

      Free nerve endings

    • C. 

      Golgi tendon organ

    • D. 

      Pacinian corpuscles

  • 26. 
    Where will you be able to find pacinian corpuscles?
    • A. 

      In the skin

    • B. 

      In muscles around joints

    • C. 

      In tissues around joints

    • D. 

      On tendons

  • 27. 
    What is the function of a muscle spindle? (check all that apply)
    • A. 

      Acts as safety device that helps prevent excessive force during muscle contraction

    • B. 

      Provides fiber length info to CNS

    • C. 

      Monitors tension developed from muscle contraction

    • D. 

      Helps in fine tuning of muscle strength

  • 28. 
    • A. 

      .true

    • B. 

      False

  • 29. 
    What happens during reciprocal inhibition?
    • A. 

      Only inhibitory events occur

    • B. 

      Excitatory events occur followed by inhibitory

    • C. 

      Excitatory and inhibitory activities occur simultaneously

    • D. 

      Only excitatory events occur

  • 30. 
    • A. 

      True

    • B. 

      False

  • 31. 
    What is the function of the vestibular apparatus? (check all that apply)
    • A. 

      Maintains general equilibrium

    • B. 

      Incorporates feedback from proprioceptors

    • C. 

      Controls head and eye movement

    • D. 

      Senses changes in linear and angular acceleration

    • E. 

      All of the above

  • 32. 
    Where is the vestibular apparatus located
    • A. 

      Outer ear

    • B. 

      Inner ear

    • C. 

      Middle ear

    • D. 

      In the cochlear

  • 33. 
    Presynaptic neurons always secrete acytocholine
    • A. 

      True

    • B. 

      False

  • 34. 
    Which brain structure connects the brain and spinal cord.
    • A. 

      Medulla

    • B. 

      Brain stem

    • C. 

      Thalamus

    • D. 

      Hypothalamus

    • E. 

      None of the above

  • 35. 
    • A. 

      Cerebellum

    • B. 

      Motorcortex

    • C. 

      Autonomic cortex

    • D. 

      Cerebrum

    • E. 

      Brain stem

  • 36. 
    The cerebellum has connections to the motor cortex, brain stem, and spinal cord.
    • A. 

      True

    • B. 

      False

  • 37. 
    The basal ganglia produces fast, ballistic movement.
    • A. 

      True

    • B. 

      False

  • 38. 
    Which division of the ANS causes an increase in the salivary gland volume and a decrease in its viscosity.
    • A. 

      Parasympathetic

    • B. 

      Sympathetic

  • 39. 
    Viscosity of the saliva increases with exercise. 
    • A. 

      True

    • B. 

      False

  • 40. 
    • A. 

      True

    • B. 

      False

  • 41. 
    • A. 

      Somatic

    • B. 

      Parasympathetic

    • C. 

      Sympathetic

  • 42. 
    Acytocholine is a cholinergic neurotransmitter
    • A. 

      True

    • B. 

      False

  • 43. 
    Sympathetic neurons have short preganglionic fibers and long postganglionic fibers.
    • A. 

      True

    • B. 

      False

  • 44. 
    The autonomic nervous system is responsible for maintaining the constancy of the body's internal environment.
    • A. 

      True

    • B. 

      False

  • 45. 
    Releasing norepinephrine tends to excite an organ.
    • A. 

      True

    • B. 

      False

  • 46. 
    • A. 

      Association area of cerebrum

    • B. 

      Motor cortex

    • C. 

      Cerebellum

    • D. 

      None of the above

  • 47. 
    The motor cortex is responsible for sending the information down to the association areas.
    • A. 

      True

    • B. 

      False

  • 48. 
    The human body contains over ___ voluntary skeletal muscles.
    • A. 

      500

    • B. 

      300

    • C. 

      400

    • D. 

      600

  • 49. 
    What percent of all skeletal muscles constitute the total weight of the human body
    • A. 

      30 to 40

    • B. 

      40 to 50

    • C. 

      20 to 30

    • D. 

      50 to 60

  • 50. 
    _________ is the neurotransmitter that stimulates the muscle to depolarize.
    • A. 

      Norepinephrine

    • B. 

      Dopamine

    • C. 

      Acytocholine

    • D. 

      Epinephrine

  • 51. 
    The sarcolemma is the membrane of a muscle fiber.
    • A. 

      True

    • B. 

      False

  • 52. 
    The sacroplasmic reticulum is the storage site for _______.
    • A. 

      ATP

    • B. 

      Sodium (Na+)

    • C. 

      Calcium (Ca2+)

    • D. 

      Potassium (K+)

    • E. 

      All of the above

  • 53. 
    Which band represents actin? 
    • A. 

      I

    • B. 

      A

    • C. 

      Z

    • D. 

      M

    • E. 

      H

  • 54. 
    Which band represents myosin and actin?
    • A. 

      I

    • B. 

      A

    • C. 

      Z

    • D. 

      M

    • E. 

      H

  • 55. 
    • A. 

      True

    • B. 

      False

  • 56. 
    • A. 

      True

    • B. 

      False

  • 57. 
    The _______ surrounds bundles of muscle fibers
    • A. 

      Myofibrils

    • B. 

      Endomysium

    • C. 

      Epimysium

    • D. 

      Perimysium

  • 58. 
    The opening of Ca2+ channels in the axons results in what?
    • A. 

      The release of AcH from the synaptic vesicles.

    • B. 

      A depolarization of the neuron

    • C. 

      Another action potential, just in case the first one didn't cause a contraction.

    • D. 

      None of the above

  • 59. 
    Sends information back to the CNS about the metabolic rate of muscular activity.
    • A. 

      Muscle chemoreceptors

    • B. 

      Proprioceptors

    • C. 

      Reflexes

    • D. 

      Neurotransmitters

  • 60. 
    The maximum velocity of shortening is greatest at the highest force.
    • A. 

      True

    • B. 

      False

  • 61. 
    Disorder of the basal ganglia may cause Parkinson's Disease.
    • A. 

      True

    • B. 

      False

  • 62. 
    Spinal tuning deals with involuntary skeletal movement.
    • A. 

      True

    • B. 

      False

  • 63. 
    Sympathetic neurons are found in the brain and sacral spinal cord and parasympathetic neurons are found in the thoracic and lumbar spinal cord.
    • A. 

      True

    • B. 

      False

  • 64. 
    The predominant energy system for type IIa muscles fibers is ___________ 
    • A. 

      Aerobic

    • B. 

      Anaerobic

    • C. 

      A combination of aerobic and anaerobic

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