13. The Peripheral Nervous System

Which of the following structures can be found in the afferent division of the PNS?

Match each type of neuroglial cell with its correct function.

____ Schwann cells    

____ Ependymal cells     

____ Microglial cells    

____ Oligodendrocytes     

____ Satellite cells    

____ Astrocytes

a. Phagocytic cells of the CNS

b. Surround the cell bodies of neurons in the PNS

c. Create the myelin sheath in the PNS

d. Anchor neurons and blood vessels, maintain extracellular environment around neurons, assist in repair of damaged brain tissue

e. Create the myelin sheath in the CNS

f. Ciliated cells in the CNS that produce and circulate the fluid around the brain and spinal cord

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

d. The term nerve is the equivalent of the term neuron.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

e. There are 31 pairs of spinal nerves and 12 pairs of cranial nerves.

The anterior roots of each spinal segment

(a) Bring sensory information into the spinal cord

(b) Control peripheral effectors

(c) Contain the axons of somatic motor and visceral motor neurons

(d) Do both b and c