Which two factors affect the speed at which the action potential is conducted along a neuron's axon?
A)the diameter of the axon and whether the axon is wrapped with a myelin sheath
B)the number of dendrites and the size of the cell body
C)the type and number of axons projecting from the neuron
D)the size of the positive electrical charge just before an action potential occurs and the number of adjacent neurons

Question

Quizplus · Accepted Answer

The diameter of the axon and whether the axon is wrapped with a myelin sheath both affect the speed at which the action potential is conducted along a neuron's axon. A larger diameter allows for faster conduction, and a myelin sheath insulates the axon and prevents signal loss, also allowing for faster conduction. The other options listed (B and C) do not affect the speed of the action potential as directly or significantly. Option D is also incorrect as the size of the positive charge and adjacent neurons do not directly affect the speed of the action potential.

Which Two Factors Affect the Speed at Which the Action