Question

question 20
this tends to be the longest cytoplasmic projection from a neuron.
synapse
axon terminal
axon
cell body
dendrite
question 21
the structural and functional center of the entire nervous system is the ______ nervous system.
peripheral
autonomic
afferent
central
question 22
which of these glia cells are located in the peripheral nervous system?
astrocytes
ependymal cells
oligodendrocytes
schwann cells
microglia

Explanation:

• For Question 20: Neurons have different parts. The axon is the long - cytoplasmic projection that transmits electrical impulses away from the cell body.
• For Question 21: The central nervous system, consisting of the brain and spinal cord, is the structural and functional center of the entire nervous system.
• For Question 22: Schwann cells are glial cells located in the peripheral nervous system, which help in the myelination of axons in the PNS.

Answer:

Question 20: C. axon
Question 21: D. central
Question 22: D. Schwann cells