Cranial Nerves

Question 0

CN II

Answer 0

• Optic Nerve
• Function: Sight
• Exit: Optic Canal

Question 1

CN I

Answer 1

• Olfactory Nerve
• Function: Smell
• Exit: Foramen of cribiform plate of ethmoid bone

Question 2

CN III

Answer 2

• Oculomotor
• Function: Movement of eye and eye lid, turns eyeball superiorly, inferiorly, and medially (abducens moves eye laterally)
• Exit: Superior Orbital Fissure

Question 3

CN IV

Answer 3

• Trochlear
• Function: Assists in turning eye inferolaterally
• Exit: Superior Orbital Fissure

Question 4

CN V

Answer 4

• Trigeminal
• Function: Sensation of olfactory area, maxillary area, and mandibular area, Motor mastication
• Exit: Superior Orbital Fissure

Question 5

CN VI

Answer 5

• Abducens
• Function: Abduct the eye, lateral movement of the eye
• Exit: Superior Orbital Fissure

Question 6

CN VII

Answer 6

• Fascial
• Function: Facial expression and parasympathetic to fascia glands
• Exit: Internal Acoustic Meatus, Fascial Canal, Stylomastoid Foramen

Question 7

CN VIII

Answer 7

• Vestibulocochlear
• Function: Vestibular sensation and balance and position
• Exit: Internal Acoustic Meatus

Question 8

CN IX

Answer 8

• Glossopharyngeal
• Function: Parasympathic to parotid gland, sensory to ear, pharanx, middle ear, corotid body and sinus, responsible for taste is posterior 1/3 of tongue
• Exit: Jugular Foramen

Question 9

CN X

Answer 9

• Vagus
• Function: Parasympathetic to smooth muscle of trachea, bronchi, digestive tract, cardiac muscle; Motor to constrictors of pharynx, intrinsics of larynx, muscles of palate, muscles in upper 2/3rds of esophagus, Sensation of GI tract
• Exit: Jugular foramen

Question 10

CN XI

Answer 10

• Spinal Acessory
• Function: Innervates traps and SCM
• Exit: Jugular Foramen

Question 11

CN XII

Answer 11

• Hypoglossal
• Function: Motor to intrinsic and extrinsic muscles of the tongue
• Exit: Hypoglossal Canal