Week 1 Cranial Nerves

Question 1

what are the five functional capacities that cranial nerves can carry

Answer 1

1. motor fibers to voluntary striated muscles (somatic motor/general somatic efferent)
2. motor fibers to involuntary muscles; smooth and glands (general visceral efferent)
3. sensory from the skin and mucous touch, taste, smell etc. membranes (general somatic afferent) CN 5, 7, 9, 10.
4. sensation from the viscera (general visceral afferent) from carotid body, lungs, heart, GI tract etc.
5. unique sensations like tastes from visceral afferent and special senses from somatic afferent

Question 2

which nerves are purely motor

Answer 2

CN 3, 6, 11, 12 and the motor root of CN 5

Question 3

Olfactory nerve function

Answer 3

special sensory (special visceral afferent) sense of smell.

Question 4

where are the olfactory receptor neuron cell bodies found

Answer 4

olfactory organ

Question 5

where is the olfactory organ

Answer 5

roof of the nasal cavity along the nasal septum and medial wall of the superior nasal concha