CRANIAL NERVES COMPREHENSIVE EXAM UPDATED
QUESTIONS AND ANSWERS GUARANTEE A+
✔✔CN III Oculomotor - ✔✔This nerve innervates the upper eyelid muscle and four of
the six extrinsic eye muscles
✔✔supplies 4 extrinsic eye muscles to move eye and supplies levator palpebrae
superioris muscle to elevate eyelid - ✔✔somatic motor function of CN III Oculomotor
✔✔superior rectus, inferior rectus, medial rectus, and inferior oblique - ✔✔name the 4
extrinsic eye muscles included in the somatic function of the CN III oculomotor
✔✔innervates sphincter pupillae muscle of iris to make pupil constrict. Contracts cilliary
muscles to make lens of eye more spherical - ✔✔Parasympathetic motor function of CN
III Oculomotor
✔✔midbrain - ✔✔origin of CN III oculomotor
✔✔ptosis, paralysis of most eye muscles, diplopia, focusing difficulty - ✔✔conditions if
CN III oculomotor is damaged
✔✔CN IV trochlear - ✔✔this nerve innervates 1 extrinsic eye muscle that loops through
a pulley shaped ligament
✔✔superior oblique - ✔✔what is the 1 extrinsic eye muscle innervated by the trochlear
nerve
✔✔inferiorly and laterally - ✔✔what directions does the superior oblique move the eye
✔✔midbrain - ✔✔origin of trochlear nerve
✔✔paralysis of superior oblique, diplopia - ✔✔conditions possible if trochlear nerve is
damaged
✔✔superior rectus - ✔✔
✔✔levator palpebrae superioris - ✔✔
✔✔inferior rectus - ✔✔
✔✔inferior oblique - ✔✔
✔✔medial rectus - ✔✔
, ✔✔sphincter pupillae - ✔✔
✔✔cilliary muscle - ✔✔
✔✔dilator pupillae - ✔✔
✔✔CN V Trigeminal - ✔✔this nerve consists of 3 divisions: opthalmic (V1) Maxillary
(V2), and Mandibular (V3); receives sensory from face, oral cavity, nasal cavity,
meninges and anterior scalp. Innervates muscles of mastication
✔✔touch, temperature, and pain - ✔✔sensory types of information for the trigeminal
nerve are
✔✔Opthalmic (V1) - ✔✔BLANK division of trigeminal nerve conducts sensory impulses
from cornea, nose, forehead, ant. scalp, and meninges
✔✔Maxillary (V2) - ✔✔BLANK division of trigeminal nerve conducts sensory impulses
from nasal mucosa, palate, gums, cheek, and meninges
✔✔Mandibular (V3) - ✔✔BLANK division of trigeminal nerve conducts sensory impulses
from ant. 2/3 of tongue, meninges, skin of chin, lower jaw, lower teeth; 1/3 sensory
axons of auricle of ear
✔✔innervates muscles of mastication, mylohyoid, ant. belly of digastic, tensor tympani
and tensor veli palatini - ✔✔somatic motor function of CN V trigeminal
✔✔temporalis, masseter, lateral and medial pterygoids - ✔✔muscles of mastication
innervated by CN V trigeminal include
✔✔pons - ✔✔origin of CN V trigeminal
✔✔trigeminal neuralgia - ✔✔conditions of nerve damage for CN V trigeminal
✔✔CN VI Abducens - ✔✔innervates lateral rectus eye muscle, which abducts the eye
✔✔lateral rectus - ✔✔
✔✔innervates lateral rectus for eye abduction - ✔✔somatic motor function of CN VI
abducens
✔✔pons - ✔✔origin of CN VI abducens
✔✔CN VII Facial - ✔✔Innervates muscles of facial expression; lacrimal gland, and most
salvary glands; conducts taste sensations from ant. 2/3 of tongue
QUESTIONS AND ANSWERS GUARANTEE A+
✔✔CN III Oculomotor - ✔✔This nerve innervates the upper eyelid muscle and four of
the six extrinsic eye muscles
✔✔supplies 4 extrinsic eye muscles to move eye and supplies levator palpebrae
superioris muscle to elevate eyelid - ✔✔somatic motor function of CN III Oculomotor
✔✔superior rectus, inferior rectus, medial rectus, and inferior oblique - ✔✔name the 4
extrinsic eye muscles included in the somatic function of the CN III oculomotor
✔✔innervates sphincter pupillae muscle of iris to make pupil constrict. Contracts cilliary
muscles to make lens of eye more spherical - ✔✔Parasympathetic motor function of CN
III Oculomotor
✔✔midbrain - ✔✔origin of CN III oculomotor
✔✔ptosis, paralysis of most eye muscles, diplopia, focusing difficulty - ✔✔conditions if
CN III oculomotor is damaged
✔✔CN IV trochlear - ✔✔this nerve innervates 1 extrinsic eye muscle that loops through
a pulley shaped ligament
✔✔superior oblique - ✔✔what is the 1 extrinsic eye muscle innervated by the trochlear
nerve
✔✔inferiorly and laterally - ✔✔what directions does the superior oblique move the eye
✔✔midbrain - ✔✔origin of trochlear nerve
✔✔paralysis of superior oblique, diplopia - ✔✔conditions possible if trochlear nerve is
damaged
✔✔superior rectus - ✔✔
✔✔levator palpebrae superioris - ✔✔
✔✔inferior rectus - ✔✔
✔✔inferior oblique - ✔✔
✔✔medial rectus - ✔✔
, ✔✔sphincter pupillae - ✔✔
✔✔cilliary muscle - ✔✔
✔✔dilator pupillae - ✔✔
✔✔CN V Trigeminal - ✔✔this nerve consists of 3 divisions: opthalmic (V1) Maxillary
(V2), and Mandibular (V3); receives sensory from face, oral cavity, nasal cavity,
meninges and anterior scalp. Innervates muscles of mastication
✔✔touch, temperature, and pain - ✔✔sensory types of information for the trigeminal
nerve are
✔✔Opthalmic (V1) - ✔✔BLANK division of trigeminal nerve conducts sensory impulses
from cornea, nose, forehead, ant. scalp, and meninges
✔✔Maxillary (V2) - ✔✔BLANK division of trigeminal nerve conducts sensory impulses
from nasal mucosa, palate, gums, cheek, and meninges
✔✔Mandibular (V3) - ✔✔BLANK division of trigeminal nerve conducts sensory impulses
from ant. 2/3 of tongue, meninges, skin of chin, lower jaw, lower teeth; 1/3 sensory
axons of auricle of ear
✔✔innervates muscles of mastication, mylohyoid, ant. belly of digastic, tensor tympani
and tensor veli palatini - ✔✔somatic motor function of CN V trigeminal
✔✔temporalis, masseter, lateral and medial pterygoids - ✔✔muscles of mastication
innervated by CN V trigeminal include
✔✔pons - ✔✔origin of CN V trigeminal
✔✔trigeminal neuralgia - ✔✔conditions of nerve damage for CN V trigeminal
✔✔CN VI Abducens - ✔✔innervates lateral rectus eye muscle, which abducts the eye
✔✔lateral rectus - ✔✔
✔✔innervates lateral rectus for eye abduction - ✔✔somatic motor function of CN VI
abducens
✔✔pons - ✔✔origin of CN VI abducens
✔✔CN VII Facial - ✔✔Innervates muscles of facial expression; lacrimal gland, and most
salvary glands; conducts taste sensations from ant. 2/3 of tongue
