Cranial Nerves

Question 1

CN 1 (name and function)

Answer 1

Olfactory. Smell

Question 2

CN 2

Answer 2

Optic. Vision

Question 3

CN 3

Answer 3

Oculomotor.  Innervates 4/6 eye muscles.
Superior rectus (up), inferior rectus (down), medial rectus (in), and inferior oblique (elevate and abduct)

Question 4

CN 4

Answer 4

Trochlear. Innervates superior oblique eye mm ( depression and intorsion)

Question 5

CN 5

Answer 5

Trigeminal. Sensation of the face (pain, temperature, vibration for face, mouth, nasal sinuses, and meninges). Muscle of mastication: temporalis and masseter

Question 6

CN 6

Answer 6

Abducens. Lateral rectus mm. Abducts the eye

Question 7

CN 7

Answer 7

Fascial. Muscles of facial expression. Sensation of anterior 2/3 tongue. Salivation and lacrimation.

Question 8

CN 8

Answer 8

Vestibulochochlear. hearing and vestibular sensation

Question 9

CN 9

Answer 9

Glossopharyngeal. Taste of posterior 1/3 of tongue. Salivation. sensation of soft palate and pharyx

Question 10

CN 10

Answer 10

Vagus. Parasympathetic to lungs, heart, and digestion. Laryngeal (speech) and phargyngeal (swallow). Taste from epiglottis and pharynx. Aortic arch reflexes

Question 11

CN 11

Answer 11

Accessory spinal nerve. SCM and upper trap

Question 12

CN 12

Answer 12

Hyopglassal. Tongue movement

Question 13

CNs for eye movement

Answer 13

CN3 oculomotor (4/6) CN4 trochlear (superior oblique), and CN6 abducens (lateral rectus)

Question 14

CNs for taste

Answer 14

CN 7 facial (anterior 2/3), CN 9 Glossopharyngeal (posterior 1/3), and CN 10 Vagus epiglottis and pharynx