For a neuron to generate an action potential, which of the following must be true?

Question

a
The neuron must be in the refractory period
b
Glial cells must release neurotransmitters into the axon
c
Excitatory impulses must outnumber inhibitory impulses
d
Dopamine and serotonin must be present in equal amounts

Answer 1

For a neuron to generate an action potential, the correct answer is:

c. Excitatory impulses must outnumber inhibitory impulses

An action potential is generated when the depolarization of the neuron's membrane reaches a certain threshold, which generally occurs when excitatory signals (which promote depolarization) exceed inhibitory signals (which promote hyperpolarization). The other options do not correctly represent the requirements for action potential generation.