Peripheral Nervous System ( Finals )

Question 1

This system consists of cranial and spinal nerves.

Answer 1

peripheral nervous system (PNS)

Question 2

arise from neural crest and migrate throughout the PNS, ensheathing and myelinating axons and forming satellite cells in ganglia;

Answer 2

neurolemmocytes (Schwann cells)

Question 3

What neurons originated from neural crest as bipolar cells that subsequently become unipolar?

Answer 3

afferent neurons

Question 4

arise from neural crest, the cells migrate to form autonomic ganglia at positions within the head, or beside vertebrae (along sympathetic trunk), or near the aorta, or in the gut wal;

Answer 4

postganglionic visceral efferent neurons

Question 5

arise from the basal plate of the neural tube; their cell bodies remain in the CNS and their axons join peripheral nerves

Answer 5

somatic efferent neurons and preganglionic visceral efferent neurons

Question 6

What nerves establish contact early with the nearest somite, somitomere, placode, or pharyngeal arch and innervate derivatives of these embryonic structures?

Answer 6

Peripheral nerves

Question 7

this cranial nerve innervates first pharyngeal arch (muscles of mastication)

Answer 7

trigeminal nerve (V)

Question 8

this cranial nerve innervates second pharyngeal arch (muscles of facial expression)

Answer 8

facial nerve (VII)

Question 9

this cranial nerve innervates third pharyngeal arch (pharyngeal muscles)

Answer 9

glossopharyngeal nerve (IX)

Question 10

this cranial nerve innervates 4 & 6 pharyngeal arches (muscles of pharynx, larynx, & esophagus)

Answer 10

vagus nerve (X)