Anatomy & Physiology Exam 4

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 Anatomy & Physiology Exam 4
Practice quiz for the nervous system exam. Anatomy & Physiology, UTSA, KIN 3313

  
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  • 1. 
    The peripheral nervous system consists of the brain and spinal cord.
    • A. 

      True

    • B. 

      False


  • 2. 
    Afferent fibers are fibers that transmit impulses from the receptors to the CNS.
    • A. 

      True

    • B. 

      False


  • 3. 
    Skeletal muscles are innervated by neurons in the motor division.
    • A. 

      True

    • B. 

      False


  • 4. 
    Glands are innervated by the somatic motor system.
    • A. 

      True

    • B. 

      False


  • 5. 
    Which structure in the neuron generates the action potential?
    • A. 

      Nucleus

    • B. 

      Node of Ranvier

    • C. 

      Axon hillock

    • D. 

      Axon

    • E. 

      None of the above


  • 6. 
    In the peripheral nervous system, the myelin sheath is formed by the ologodendrocytes.
    • A. 

      True

    • B. 

      False


  • 7. 
    Post ganglionic fibers of the autonomic system are non myelinated.
    • A. 

      True

    • B. 

      False


  • 8. 
    Typically, what is the charge of a neuron at rest?
    • A. 

      -55 mv

    • B. 

      -70 mv

    • C. 

      -50 mv

    • D. 

      -40 mv

    • E. 

      -60 mv


  • 9. 
    Threshold of a neuron is reached at how many millivolts?
    • A. 

      -65 mv

    • B. 

      -70 mv

    • C. 

      -60 mv

    • D. 

      -55 mv


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

      It pumps 2 K+ in and 3 Na+ out

    • B. 

      It pumps 3 K+ in and 2 Na+ out

    • C. 

      It pumps 2 Na+ in and 3 K+ out

    • D. 

      It pumps 3 K+ in and 3 K+ out

    • E. 

      There are different sodium-potassium pumps that can do all of the above.


  • 11. 
    What happens during an action potential?
    • A. 

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

    • B. 

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

    • C. 

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

    • D. 

      Inside the axon becomes more positive due to an efflux of potassium

    • E. 

      None of the above


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

      Sodium channels close

    • B. 

      Potassium channels close

    • C. 

      Potassium leaves the cell

    • D. 

      None of the above


  • 13. 
    ______ and ______ causes depolarization of the post synaptic membrane. (neurotransmitter and ion) (check all that apply)
    • A. 

      Gaba

    • B. 

      Sodium

    • C. 

      Potassium

    • D. 

      Acetylcholine


  • 14. 
    The synapse of a neuron is where synaptic vesicles are stored.
    • A. 

      True

    • B. 

      False


  • 15. 
    The dendrites are the receptive regions of the neuron.
    • A. 

      True

    • B. 

      False


  • 16. 
    Temporal summation is the summing of several different pre-synaptic neurons.
    • A. 

      True

    • B. 

      False


  • 17. 
    Which type of post synaptic potential causes hyperpolarization.
    • A. 

      Excitatory post synaptic potential

    • B. 

      Action potential

    • C. 

      Inhibitory post synaptic potential

    • D. 

      Degraded potenial


  • 18. 
    The gaps between schwann cells are called _________
    • A. 

      Terminal cisternae

    • B. 

      Node of Ranvier

    • C. 

      Nerolgia

    • D. 

      Astrocytes


  • 19. 
    Somatic motor neurons also innervate glandular tissue.
    • A. 

      True

    • B. 

      False


  • 20. 
    Pre-synaptic neurons always secrete acetylcholine. 
    • A. 

      True

    • B. 

      False


  • 21. 
    The sympathetic division conserves energy and promotes nonemergency functions.
    • A. 

      True

    • B. 

      False


  • 22. 
    Sympathetic neurons have long pre-ganglionic fibers and short post-ganglionic fibers.
    • A. 

      True

    • B. 

      False


  • 23. 
    The autonomic nervous system is responsible for maintaining the constancy of the body's internal environment (homeostasis).
    • A. 

      True

    • B. 

      False


  • 24. 
    Releasing acetylcholine tends to excite an organ
    • A. 

      True

    • B. 

      False


  • 25. 
    A ganglion is the site where the pre-synaptic neuron synapse with the post-synaptic neuron releasing acetylcholine. 
    • A. 

      True

    • B. 

      False


  • 26. 
    ____________ is the neurotransmitter that causes a muscle to contract/depolorize.
    • A. 

      Norepinephrine

    • B. 

      Epinephrine

    • C. 

      Gaba

    • D. 

      Acetylcholine


  • 27. 
    The opening of Ca 2+ channels in the axon results in what?
    • A. 

      A depolarization of the neuron

    • B. 

      The release of acetylcholine from the synaptic vesicles

    • C. 

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

    • D. 

      None of the above


  • 28. 
    These cells cushion the brain
    • A. 

      Oligodendrocytes

    • B. 

      Appendible cells

    • C. 

      Microglia cells

    • D. 

      Neuroglia cells


  • 29. 
    These cells form the myelin sheath in the CNS.
    • A. 

      Astrocytes

    • B. 

      Schwann cells

    • C. 

      Microglia

    • D. 

      None of the above


  • 30. 
    The white blood cells of the CNS
    • A. 

      Neroglia

    • B. 

      Lympocytes

    • C. 

      Appendible cells

    • D. 

      Microglia


  • 31. 
    According to Ohms law, if the voltage increases, the current decreases.
    • A. 

      True

    • B. 

      False


  • 32. 
    According to Ohms law, if voltage increases, resistance decreases.
    • A. 

      True

    • B. 

      False


  • 33. 
    Saltatory conduction also occurs in post-synaptic fibers.
    • A. 

      True

    • B. 

      False


  • 34. 
    The greater the gradient of ions, the greater potential to do work
    • A. 

      True

    • B. 

      False


  • 35. 
    Exocytosis is the process in which
    • A. 

      The ions in the exterior of the cell fuse to the cell membrane and enter the cell chemically.

    • B. 

      Hormones of a cell are catalyzed and formed into new cells

    • C. 

      A cell ejects products such as hormones from the cell interior to the exterior.

    • D. 

      None of the above


  • 36. 
    ATP is converted into cAMP by which enzyme?
    • A. 

      Kinase A

    • B. 

      G protein

    • C. 

      Ligand

    • D. 

      None of the above


  • 37. 
    The G protein stimulates adenylyl cyclase
    • A. 

      True

    • B. 

      False


  • 38. 
    The cAMP second messenger system is an important regulatory of cellular energy during _________
    • A. 

      An action potential

    • B. 

      Exercise

    • C. 

      Repolarization

    • D. 

      Rest


  • 39. 
    Most multipolar neurons are ____________
    • A. 

      Visceral motor neurons

    • B. 

      Sensory motor neurons

    • C. 

      Somatic motor neurons

    • D. 

      Interneurons

    • E. 

      Visceral sensory


  • 40. 

    WHICH LETTER REPRESENTS THE AXON HILLOCK?
    • A. 

      F

    • B. 

      E

    • C. 

      G

    • D. 

      B

    • E. 

      None of the above


  • 41. 

    SYNAPTIC VESICLES ARE STORED HERE.
    • A. 

      B

    • B. 

      D

    • C. 

      J

    • D. 

      A


  • 42. 

    WHICH LETTER REPRESENTS THE DENDRITES?
    • A. 

      K

    • B. 

      A

    • C. 

      B

    • D. 

      E


  • 43. 

    FORMS THE MYELIN SHEATH IN THE PNS
    • A. 

      J

    • B. 

      I

    • C. 

      D

    • D. 

      E


  • 44. 

    "J" REPRESENTS THE _____________
    • A. 

      Nucleolus

    • B. 

      Schwann cell

    • C. 

      Nucleus

    • D. 

      Astrocyte


  • 45. 

    "C" REPRESENTS THE ___________
    • A. 

      Myelin sheath

    • B. 

      Intracellular space

    • C. 

      Astrocyte

    • D. 

      Node of Ranvier

    • E. 

      None of the above


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