ABLE
Advanced Baccalaureate Learning Experience

Neurohistology

Question 2
The next two questions are based upon the same EM. This image shows part of a longitudinal section of peripheral nerve.

a) The region indicated by the label X is the:

  1. cytoplasm of a Schwann cell (a PNS glial cell)
  2. myelin of an oligodendrocyte (a CNS glial cell)
  3. cytoplasm of an axon
  4. nucleus of a satellite cell
  5. cytoplasm of a neuron soma

b) The region indicated by label Y is a(n):

  1. node of Ranvier
  2. neuromuscular junction
  3. axo-dendritic synapse
  4. dendritic spine
Image 1 - Question 2
From: Peters et al., The Fine Structure of the Nervous System, W.B. Saunders Co., Philadelphia, 1976
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End of Question 2