Describe the Role of Regulatory Neurons

Describe the role of regulatory neurons.

A) Regulatory neurons act as part of the defense system to protect the presynaptic neurons from pathogens.
B) Regulatory neurons block presynaptic neurons from drugs and other chemicals in the blood.
C) Regulatory neurons assist in the repair of injured neurons.
D) Regulatory neurons speed the propagation of action potentials between presynaptic neurons and postsynaptic neurons.
E) Regulatory neurons facilitate or inhibit the activities of presynaptic neurons by affecting the membrane of the cell body or by altering the sensitivity of axon terminals.