Question 1
In this EM of peripheral nerve, the structure indicated by the pointer is:
- cytoplasm of an oligodendrocyte (a CNS glial cell)
- axoplasm of an unmyelinated axon
- endoneurium
- myelin
- synaptic cleft

Figure 9-14, pg. 198, Color Textbook of Histology, 3rd edition, Leslie P. Gartner, James L. Hiatt, W.B. Saunders Co., 2007
End of Question 1