The velocity of conduction of action potentials along a nerve will be increased by

Question

Quizplus · Accepted Answer

[IV E 4 b]. Myelin insulates the nerve, thereby increasing conduction velocity; action potentials can be generated only at the nodes of Ranvier, where there are breaks in the insulation. Activity of the $\mathrm{Na}^{+}-\mathrm{K}^{+}$pump does not directly affect the formation or conduction of action potentials. Decreasing nerve diameter would increase internal resistance and, therefore, slow the conduction velocity.

The Velocity of Conduction of Action Potentials Along a Nerve Na+−K+\mathrm{Na}^{+}-\mathrm{K}^{+}Na+−K+

The Velocity of Conduction of Action Potentials Along a Nerve $\mathrm{Na}^{+}-\mathrm{K}^{+}$