Peripheral Neurology

Question 0

Contrast the sensory ganglion with the motor ganglion?

Answer 0

Sensory ganglia contain primary sensory neuron cell bodies and lack synapses.

Motor ganglia contain secondary motor neuron cell bodies and always demonstrate synapses.

Question 1

What are the primary neuronal projections observed in a nerve?

Answer 1

Peripheral sensory processes and motor nerve fibers.

Question 2

Muscles derived from Somites are innervated by which cranial nerves?

Answer 2

CN3 oculomotor, CN4 trochlear, CN6 abducens, and CN12 hypoglossal.

Question 3

Muscles derived from the branchial or pharyngeal arches are innervated by which CNs?

Answer 3

CN5 trigeminal, CN7 facial, CN9 glossopharyngeal, CN10 vagus, and CN11 spinal accessory.

Question 4

What peripheral nerves contain visceral efferent pathways at their origin?

Answer 4

CN3 oculomotor, CN7 facial, CN9 glossopharyngeal, CN10 vagus, as well as T1-T12, L1-L2, and S2-S4.

Question 5

What are the ultimate target cells of the visceral efferent pathway?

Answer 5

Smooth muscles, cardiac muscle, glandular tissue, and some unique cell types.

Question 6

What is the location for the secondary sympathetic efferent neurons?

Answer 6

A prevertebral ganglion or paravertebral ganglion.

Question 7

What cells derived from the neural crest were emphasized in class?

Answer 7

Secondary sympathetic efferent neurons and adrenal medulla chromaffin cells.