One function of the glial cells is to: a. provide nutrients to interneurons. b. control heartbeat and breathing. c. control the muscle movements involved in speech. d. mimic the effects of neurotransmitters. e. stimulate the production of hormones.

Provide nutrients to interneurons

Explanation:

The four main functions of glial cells are: to surround neurons and hold them in place, to supply nutrients and oxygen to neurons, to insulate one neuron from another, and to destroy and remove the carcasses of dead neurons.