Which of the following is a key a function of the glial cells?
A) protection of the outer surface of the brain
B) removal of physical debris from the brain
C) secretion of CSF in the brain
D) movement of vesicles along the axon
E) the conduction of action potentials

Question

Quizplus · Accepted Answer

Glial cells are responsible for removing physical debris and dead cells from the brain through a process called phagocytosis.

Answer: C 
 Some glial cells, particularly ependymal cells, are responsible for producing and secreting cerebrospinal fluid (CSF), which cushions and protects the brain.

Answer: D 
 Glial cells, specifically the Schwann cells and oligodendrocytes, are responsible for the movement of vesicles along the axon in order to support the transmission of nerve impulses.

Option A is incorrect because the outer surface of the brain is protected by the skull, meninges, and cerebrospinal fluid, not glial cells. Option E is incorrect because the conduction of action potentials is the function of neurons, not glial cells.

Which of the Following Is a Key a Function of the Glial