Why are CMAPs significantly greater than sensory nerve action potentials (SNAPs)?
A) CMAPs are determined by antidromic rather than orthodromic stimulation.
B) SNAPs have fewer nerve fibers to activate compared with CMAPs.
C) Distal latencies of SNAPs are much shorter than those of CMAPs.
D) CMAPs are the summation of numerous muscle fiber action potentials.

Question

Quizplus · Accepted Answer

CMAPs are the summation of numerous muscle fiber action potentials, therefore they will be significantly greater in amplitude compared to SNAPs, which are generated from fewer nerve fibers.

Why Are CMAPs Significantly Greater Than Sensory Nerve Action Potentials