final neuro practice

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  1. 41) The arbor vitae refers to:
    B) cerebellar white matter.
  2. 42) Neurons differ from cells in other tissues in that
    A) neurons are incapable of mitosis
  3. 43) A neuron that has as its primary function the job of connecting other neurons is called a(n):
    C) association neuron.
  4. 44) The sodium-potassium pump:
    A) pumps three sodium ions outside the cell and two potassium ions inside.
  5. 45) The ventricles of the brain
    A) develop from the embryonic hollow in the neural tube
  6. 46) When a cell membrane is depolarized
    C) sodium channels open
  7. 47) Control of breathing is a function found in which brain region
    • D) A and C
    • A) medulla oblongata
    • C) pons
  8. 48) Which of the following is not a midbrain structure?
    A) third ventricle
  9. 49) The primary auditory cortex is located in the:
    C) temporal lobe.
  10. 50) When a loud sound coming from your car is interpreted as an indication of imminent breakdown, the brain structure involved is
    D) the frontal association area
  11. 51) Most of the tissue in the nervous system in terms of the number of cells
    C) is glial cells that support the nerve tissue
  12. 52) Which of these ions is actively transported through the cell membrane to establish a resting potential?
    A) Na
  13. 53) Bipolar neurons are most abundant in which part of the nervous system
    A) the brain
  14. 54) The region of a nerve cell that is sensitive to external stimuli is
    B) the dendrites
  15. 55) Which of the following is NOT a function of the autonomic nervous system?
    D) innervation of skeletal muscle
  16. 56) Loss of ability to learn repetitive skills like sorting and stacking blocks, might suggest damage to the:
    D) basal nuclei.
  17. 57) Injury to the hypothalamus may result in all of the following except:
    D) loss of touch sensation.
  18. 58) When you contract your biceps brachii, your triceps is inhibited; this action is performed by
    C) the basal nuclei
  19. 59) One of the most commonly found excitatory neurotransmitters in the CNS is
    C) acetylcholine
  20. 60) During the repolarization of an action potential, which cellular gates open?
    D) potassium
  21. 61) The sympathetic and parasympathetic are subdivisions of the:
    C) autonomic nervous system..
  22. 62) Functons of cerebrospinal fluid include:
    D) provide bouyancy to support the brain mass
  23. 63) Phagocytosis of debris in the central nervous system
    B) is performed by microglia
  24. 64) The region of the brain involved in sending motor impulses directly to the skeletal muscles is
    C) pre-central gyrus
  25. 65) An inhibitory neurotransmitter that is common in the brain stem is
    C) dopamine
  26. 66) Ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid are:
    A) ependymal cells.
  27. 67) A graded potential is caused by
    A) neurotransmitter binding to the post-synaptic membrane of a synapse
  28. 68) The period after an initial stimulus when a neuron is below its resting potential is called:
    A) hyperpolarization.
  29. 69) The hypothalamus:
    A) is the thermostat of the body since it regulates temperature.
  30. 70) High speed nerve impulse conduction caused by current jumping along the axon is made possible by:
    A) the myelin sheath.
  31. 71) When the membrane potential of a cell becomes more negative than the resting potential
    • D) B and C
    • B) excess potassium has been added to the sodium outside of the cell
    • C) the cell can be stimulated again only if a stronger than normal stimulus is received
  32. 72) Which of the following is NOT true of graded potentials :
    C) increase amplitude as they move away from the stimulus point.
  33. 73) The charge gradient that occurs as part of the resting membrane potential of a cell
    D) is due to the opening of potassium potassium leak channels
  34. 74) The types of cells that conduct action potentials in the body include
    • D) B and C
    • B) skeletal muscle
    • C) neurons
  35. 75) A sudden light or loud sound can awaken you when you are asleep. The brain center that is responsible for activating your brain is
    B) the reticular formation
  36. 76) An inhibitory stimulus is associated with:
    B) hyperpolarization.
  37. 77) A resting membrane potential of -65 mV would be interpreted as
    C) having a surplus of negative ions on the inner surface of the cell membrane
  38. 78) Aggregation and redirection of sensory stimuli as well as filtering of stimuli occurs in which region of the brain
    B) thalamus
  39. 79) If you are stopped for a red light at an intersection and an emergency vehicle suddenly appears behind you, resolving whether to move through the intersection or to stay until the light changes occurs where in the brain?
    A) the cingulate gyrus of limbic system
  40. 80) The brain stem is composed mostly of fiber tracts. Which of the following is true of these tracts
    • E) A and C
    • A) they are reflex centers for autonomic control
    • C) they form the cerebral peduncles
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final neuro practice
2013-05-12 17:56:21
final neuro practiced

final neuro practice
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