IGNORE just cranial nerves

Question 1

I Olfactory nerve

Answer 1

Function: (sensory) olfaction

Foramen: Cribriform foramina

Question 2

II Optic nerve

Answer 2

Function: (sensory) vision

Foramen: Optic foramen

Question 3

III Oculomotor nerve

Answer 3

Function: (somatic) moves eyeball and elevates upper eyelid. (parasympathetic) innervates sphincter papillae to constrict pupil

Foramen: Superior Orbital Fissure

Question 4

IV Trochlear nerve

Answer 4

Function: (somatic) moves eyeball inferior and laterally

Foramen: Superior Orbital Fissure

Question 5

V Trigeminal nerve

Answer 5

Sensory function:
-The ophthalmic branch conducts sensory impulses from cornea, nose, forehead, and anterior scalp
-the maxillary branch conducts sensory impulses from nasal mucosa, palate, gums, and cheek
-the mandibular branch conducts sensory impulses from the anterior 2/3 of tongue, skin of the chin, lower jaw, lower teeth, and 1/3 auricle of the ear.
Somatic motor function: innervates muscles of mastication and other muscles of the lower facial region

Foramen: Ophthalmic branch - superior orbital fissure
Maxillary branch - Foramen rotundum
Mandibular branch - foramen ovale

Question 6

VI Abducens nerve

Answer 6

Function: Innervates lateral rectus of eyeball abduction of eye

Foramen: Superior Orbital Fissure

Question 7

VII Facial nerve

Answer 7

Function: (motor) muscles of facial expression. (sensory) anterior 2/3 taste tongue. (parasympathetic) activates submandibular, sublingual and lacrimal glands.

Foramen: Stylomastoid foramen

Question 8

VIII Vestibulocochlear nerve

Answer 8

Function: (sensory) hearing and equilibrium impulses

Foramen: Internal acoustic meatus

Question 9

IX Glossopharyngeal nerve

Answer 9

Function: (sensory) taste posterior 1/3 tongue and sensory info - blood pressure/chemistry. (motor) muscles of pharynx. (parasympathetic) activate parotid salivary gland

Foramen: Jugular foramen

Question 10

X Vagus nerve

Answer 10

Function: (sensory) back of throat. (motor) muscles of pharynx. (parasympathetic) thoracic and abdominal viscera

Foramen: Jugular foramen

Question 11

XI Accessory nerve

Answer 11

Function: (motor) trapezius and sternocleidomastoid

Foramen: Jugular foramen

Question 12

XII hypoglossal nerve

Answer 12

Function: (motor) muscles of the tongue

Foramen: Hypoglossal canal