Question

(Ch. 8.2; Cells of the Nervous System) Which of the following is NOT a function of glial cells?

forming myelin around axons to enhance action potential propagation

releasing acetylcholine at synapses

scavenging bacteria and debris from dead cells.

taking up neurotransmitter to terminate synaptic signaling

formation of the blood brain barrier

Answer 1

Glial cells :-
• Glial cells are "supporting cells" of the nervous system.
Examples - Astrocytes, Schwann cells, microglia, ependal cells etc.
• The main functions of glial cells are:-
(1) to surround neurons and hold them in place
(2) to supply nutrients and oxygen to neurons
(3) to insulate one neuron from another
(4) and to destroy and remove the dead neurons.

Now in question :-
Option (b) is correct answer.
• Glial cells do not release acetylcholine at synapse. Neurotransmitters (acetylcholine) are released from the axon terminal of neurones.

Other options :-
• Schwann cells- Forming myelin around axons to enhance action potential propagation.
• Astrocytes - formation of the blood brain barrier.
taking up neurotransmitter to terminate synaptic signaling.
• Microglia - scavenging bacteria and debris from dead cells.