For an unmyelinated axon, conduction velocity is primarily determined by the
A) type of potassium channel activated.
B) type of sodium channel activated.
C) diameter of the axon.
D) number of ion channels present on the membrane.
E) permeability of the axonal membrane.

Question

Quizplus · Accepted Answer

The diameter of the axon is the primary factor determining conduction velocity in an unmyelinated axon. Larger diameters reduce the axonal resistance to the flow of ions, thereby speeding up the transmission of the nerve impulse.

For an Unmyelinated Axon, Conduction Velocity Is Primarily Determined by the