Cranial Nerve Exam Prep

Olfactory (I)

Sensory, Motor or Mixed?

Sensory

Optic (II)

Sensory, Motor or Mixed?

Sensory

Oculomotor (III)

Sensory, Motor or Mixed?

Motor
Inferior Rectus

Trochlear (IV)

Sensory, Motor or Mixed?

Motor
Superior oblique

Trigeminal (V)

Sensory, Motor or Mixed?

Mixed
Masseter

Abducens (VI)

Sensory, Motor or Mixed?

Motor
Lateral Rectus

Facial (VII)

Sensory, Motor or Mixed?

Mixed

Oculo, Oris, Mentalis, Frontalis, Nasalis

Auditory (VIII)

Sensory, Motor or Mixed?

Sensory

Glossopharyngeal (IX)

Sensory, Motor or Mixed?

Mixed
Stylopharyngeus (soft palate)

Vagus (X)

Sensory, Motor or Mixed?

Mixed
Vocalis

Accessory (XI)

Sensory, Motor or Mixed?

Motor
Trapezius

Hypoglossal (XII)

Sensory, Motor or Mixed?

Motor
Tongue

I

Name the Cranial Nerve

Olfactory

II

Name the Cranial Nerve

Optic

III

Name the Cranial Nerve

Oculomotor

IV

Name the Cranial Nerve

Trochlear

V

Name the Cranial Nerve

Trigeminal

VI

Name the Cranial Nerve

Abducens

VII

Name the Cranial Nerve

Facial

VIII

Name the Cranial Nerve

Auditory

IX

Name the Cranial Nerve

Glossopharyngeal

X

Name the Cranial Nerve

Vagus

XI

Name the Cranial Nerve

Accessory

XII

Name the Cranial Nerve

Hypoglossal

Olfactory (I)

What is the general function?

Sense of smell

Optic (II)

What is the general function?

Visual Information

Oculomotor (III)

What is the general function?

Holds eyelid open, controls most eye movement

Trochlear (IV)

What is the general function?

Downward movement of eye

Trigeminal (V)

What is the general function?

Mostly facial sensations, biting/chewing

Abducens (VI)

What is the general function?

Abduction eye movement

Facial (VII)

What is the general function?

Facial expression, taste from anterior 2/3 of tongue

Auditory (VIII)

What is the general function?

Hearing and spatial orientation related to balance

Glossopharyngeal (IX)

What is the general function?

Taste from posterior 1/3 of tongue, and sensory fibers from tonsils, pharynx and middle ear

Vagus (X)

What is the general function?

Sensation from pharynx, meninges, external auditory meatus, taste in throat, and movement of vocalis and gag reflex

Accessory (XI)

What is the general function?

Tilt/rotation of head, shoulder elevation/adduction

Hypoglossal (XII)

What is the general function?

Tongue movement

Describe suicide syndrome, its symptoms, and which cranial nerve it is associated with.

Characterized by intense pain at the masseter (jaw pain), leading to suicidal ideation due to the pain. Associated with the trigeminal nerve (V)

What modality is used to monitor hypoglossal nerve, and where do you place the recording electrodes?

MEPs & EMGs. Place recording electrodes on tongue

Describe Bell’s Palsy, its symptoms, and which cranial nerve it is associated with.

Bell’s palsy is unilateral face weakness/paralysis. Associated with facial nerve (VII)

What are the branches of the facial nerve?

Temporal

Zygomatic

Buccal

Mandibular

Cervical