The typical speed of an action potential is
A) dependent on the intensity of the excitatory signals.
B) between 2 and 200 miles per hour.
C) approximately the speed of light (186,000 miles/second).
D) approximately the speed of sound (740 miles/hour).

Question

Quizplus · Accepted Answer

The typical speed of an action potential in a neuron is between 2 and 200 miles per hour, which is relatively slower than the speed of light or sound. The speed is determined by various factors such as the diameter of the axon, the presence of myelin sheath, and the electrochemical properties of the neuronal membrane. Excitatory signals may affect the frequency or timing of action potentials, but not necessarily their speed.

The Typical Speed of an Action Potential Is