Question

Choose all that apply:

Which of the following neuron functions are NOT possible in a demyelinated neuron?

Group of answer choices

neurotransmitter synthesis

secretion

excitation

conduction

stimulus detection

Answer 1

Conduction.

Myelin's main role is to enable fast saltatory propagation of action potentials along the axon. Neurotransmitter synthesis, the secretory machinery, stimulus detection at receptors and the ability to be excited (generate local depolarizations/APs) are properties of the neuron that still exist without myelin — although loss of myelin can slow or block axonal conduction and therefore prevent neurotransmitter release at distant terminals in practice.