Unit 3 ANTR 350 - Exam Flashcard Set

Difference between cranial nerves and spinal nerves.

Cranial: emerge directly from the brain, 12 pairs, primarily serve the head and neck region, and pass through the foramina in the skull.

Spinal: emerge from the spinal cord, 31 pairs, primarily serve the rest of the body, and pass through the intervertebral foramina between vertebrae.

CN I

Olfactory

CN II

Optic

CN III

Oculomotor

CN IV

Trochlear

CN V

Trigeminal

CN VI

Abducens

CN VII

Facial

CN VIII

Vestibulochoclear

CN IX

Glossopharayngeal

CN X

Vagus

CN XI

Acessory (sometimes called spinal accessory)

CN XII

Hypoglossal

What CN passes through - Optic canal 

Optic nerve - CN II

What CN passes through - Superior Orbital Fissure

Oculomotor nerve (CN III)
Trochlear nerve (CN IV)

Trigeminal nerve, ophthalmic division (CN V1)

Abducens nerve (CN VI)

What CN passes through - Cribiform Plate

Olfactory nerve (CN I)

What CN passes through - Foramen Ovale

Trigeminal nerve, mandibular division (CN V3)

What CN passes through - Internal Acoustic Meatus

Facial nerve (CN VII)

Vestibulochochlear nerve (CN VIII)

What CN passes through - Jugular Foramen

Glossopharyngeal nerve (CN IX)

Vagus nerve (CN X)
Accessory nerve (CN XI)

What CN passes through - Hypoglossal Canal

Hypoglossal nerve (CN XII)

What cranial nerve(s) carry the special sense of - Smell

Olfactory nerve (CN I)

What cranial nerve(s) carry the special sense of - Vision

Optic nerve (CN II)

What cranial nerve(s) carry the special sense of - Hearing and balance

Vestibulocochlear nerve (CN VIII)

What cranial nerve(s) carry the special sense of - Taste

Facial nerve (CN VII) - anterior 2/3 of tongue

Glossopharyngeal nerve (CN IX) - posterioe 1/3 of the tongue

Vagus nerve (CN X) - epiglottis and pharynx

What are the cranial nerve(s) that carry - Motor information only

CN III - Oculomotoer

CN IV - Trochlear
CN VI - Abducens
CN XI - Accessory
CN XII - Hypoglossal

What are the cranial nerve(s) that carry - Sensory information only

CN I - Olfactory
CN II - Optic
CN VIII - Vestibulocochlear

What are the cranial nerve(s) that carry - Motor and sensory information (both)

CN V - Trigeminal

CN VII - Facial
CN IX - Glossopharyngeal

CN X - Vagus

Mnemonic for function type (Sensory, Motor, or Both)

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Function of CN I

Sense of smell

Function CN II

Sense of vision

Function CN III

Controls most eye movements, pupil constriction, and eyelid elevation

Function CN IV

Moves the ete downward and laterally via the superior oblique muscle

Function CN V

Sensory: Touch, pain, temperature from face, scalp, teeth.

Motor: Controls chewing muscles (mastication)

Function CN VI

Moves the eye laterally via the lateral rectus muscle

Function CN VII

Sensory: Taste from the anterior 2/3 of tongue

Motor: Facial expressions, sallivary and tear glands

Function CN VIII

Hearing (cochlear branch) and balance/equillibrium (vestibular branch)

Function CN IX

Sensory: Taste from the posterior 1/3 of the tongue, sensation from the pharynx

Motor: Swallowing and salivation

Function CN X

Sensory: From the thoracic and abdominal organs, pharynx, and larynx.

Motor: Controls speech, swallowing, and parasympathetic output to hear, lyn

Function XI

Controls sternocleidomastoid and trapezius muscles - moves head and shoulders.

Function XII

Controls tongue movements for speech, chewing, and swallowing.