Greg Accidentally Cuts His Fingertip with a Knife

Multiple Choice

Greg accidentally cuts his fingertip with a knife. The next day he notices that his fingertip seems numb to the touch. Greg is very concerned about this, but you tell him not to worry because nerves in the _____ regenerate thanks to _____.

A) central nervous system; oligodendroglial cells.
B) central nervous system; Schwann cells
C) peripheral nervous system; Schwann cells
D) peripheral nervous system; oligodendroglial cells