Cranial Nerves

Question 1

Trochlear Nerve

Answer 1

Cranial Nerve IV. Motor Nerve
In midbrain: It’s function is responsible for eye movement. Upward and downward rotation of eye.

Question 2

Trigeminal Nerve

Answer 2

Cranial Nerve V. Mixed Nerve
In Midbrain: Only sensory in midbrain. Sensory wise, its responsible for cutaneous and proprioceptive sensation of the skin, muscle, and joints of the face and mouth. Also, the sensory nerve of the teeth.
Pons: Motor here. Responsible for movement of tongue/ muscles in mastication, or chewing.

Question 3

Occulomotor Nerve

Answer 3

Cranial Nerve III. Motor nerve.
Responsible for constriction of pupils and accommodation of lens for near vision.

Question 4

Abducent Nerve

Answer 4

Cranial Nerve VI. Motor nerve.
Responsible for closing the eyeball.
Pons: Responsible for lateral muscles of the eye.

Question 5

Accessory Nerve

Answer 5

Cranial nerve XI. Motor nerve.
Enervates neck muscles.
Medulla: Controls muscles of pharynx, larynx, soft palate, and neck.

Question 6

Facial Nerve

Answer 6

Cranial Nerve VII. Mixed nerve.
Pons: Sensory component is responsible for sensation from tongue and soft palate. Supplies taste to anterior 2/3 of the tongue. Motor component supplies muscles of facial expression.

Question 7

Auditory/Acoustic/Vestibulocochlear Nerve

Answer 7

Cranial Nerve VIII. Sensory Nerve.
Pons: Responsible for sensation of hearing. Also plays a major role in equilibrium.

Question 8

Glossopharyngeal Nerve

Answer 8

Cranial Nerve IX. Mixed Nerve.
Medulla: Sensory component supplies tonsils, pharynx, and soft palate. Motor component controls muscles of pharynx.

Question 9

Vagus Nerve

Answer 9

Cranial Nerve X. Mixed Nerve.
Medulla: Sensory component supplies pinna, pharynx, larynx, and viscera. Motor component controls muscles of tongue, pharynx, larynx, and smooth muscles of viscera.
Big claim to fame is nerve that does vocal fold vibration.

Question 10

Hypoglossal Nerve

Answer 10

Cranial Nerve XII. Motor nerve
Medulla: supplies the strap muscles of the neck (muscles that hold the larynx in place) and supplies the intrinsic and extrinsic muscles of the tongue. Mostly associated with tongue movement.

Question 11

Olfactory Nerve

Answer 11

Cranial Nerve I. Sensory Nerve. Carries impulses for the sense of smell.

Question 12

Optic Nerve

Answer 12

Cranial Nerve II. Sensory Nerve. Carries impulses for the sense of sight