Cranial Nerves

Question 1

Functional division of cranial nerves involving pain, temperature, touch and vibration

Answer 1

General sensory

Question 2

Functional division of cranial nerves involving distention (bloating) and fullness but generally not pain

Answer 2

Visceral sensory

Question 3

Functional division of cranial nerves involving special senses such as vision, audition (hearing), vestibular (equilibrium)

Answer 3

Special sensory

Question 4

Functional division of cranial nerves involving traveling to skeletal muscle

Answer 4

Somatic motor

Question 5

Functional division of cranial nerves involving sympathetic and parasympathetic to smooth muscle and glands

Answer 5

Visceral motor

Question 6

Functional division of cranial nerves involving skeletal muscles of the head and neck that are derived from branchial or pharyngeal arches

Answer 6

Branchial motor

Question 7

Where are primary neurons located?

Answer 7

Ganglia (outside the CNS)

Question 8

Where are secondary neurons located?

Answer 8

Dorsal gray of brainstem; ipsilateral side

Question 9

Where are tertiary neurons located?

Answer 9

Thalamus; contralateral side

Question 10

Where are upper motor neurons located?

Answer 10

Cortex

Question 11

Where do upper motor neuron project?

Answer 11

Brainstem (corticobulbar tract)

Question 12

Where are lower motor neurons located?

Answer 12

Brainstem (CN) nuclei

Question 13

Where do lower motor neurons project?

Answer 13

Targets in the head and neck

Question 14

UMNs for parasympathetics location

Answer 14

Hypothalamus

Question 15

Preganglionic cell body location

Answer 15

Brainstem nuclei

Question 16

Postganglionic cell body location

Answer 16

Ganglia (outside the CNS)

Question 17

Do parasympathetic fibers make their own nerves?

Answer 17

Nah

Question 18

CN I is part of which functional division?

Answer 18

Special sensory

Question 19

CN I function

Answer 19

Sense of smell

Question 20

CN II is part of which functional division?

Answer 20

Special sensory

Question 21

CN II function

Answer 21

Sense of vision

Question 22

CN III is part of which functional division?

Answer 22

• Somatic motor
• Visceral motor

Question 23

CN III function

Answer 23

• Somatic motor: motor to 4 extraocular muscles
• Visceral motor: pupil constriction

Question 24

CN IV is part of which functional division?

Answer 24

Somatic motor

Question 25

CN IV function

Answer 25

Motor to superior oblique (extraocular muscle)

Question 26

CN V is part of which functional division?

Answer 26

• General sensory
• Branchial motor

Question 27

CN V function

Answer 27

General sensory:
- Touch, pain, & temperature to face and facial skeleton cavities
- Jaw proprioception
Branchial motor:
- Muscles of mastication