Test 4 (Cranial Nerves)

Olfactory (I)

Sensory: Smell
Originates from the Cerebrum

Optic (II)

Sensory: Vision
Originates from Diencephalon

Oculomotor (III)

Motor: Somatic (movements of eyeball/upper eyelid) Parasympathetic (pupil construction; muscles to focus lens)
Originates from Midbrain

Trochlear (IV)

Motor: Movement of eyeball
Originates from Midbrain

Trigeminal Ophthalmic (V)

Sensory: Upper facial structures (forehead, upper skull, top part of nose)
Originates from Medulla oblongata, pons, midbrain

Trigeminal Maxillary (V)

Sensory: Middle facial structures (portions of cheek/upper lip)
Originates from medulla oblongata, pons, midbrain

Trigeminal Mandibular (V)

Sensory: lower facial structure + anterior to ear
Motor: mastication (chewing)
Originates from medulla oblongata, pons, midbrain

Abducens (VI)

Motor: Movement of the eyeball
Originates from pons

Facial (VII)

Motor: Facial expression
Parasympathetic Motor: salivary/lacrimal glands
Sensory: Taste
Originates from Medulla oblongata, pons

Vestibulocochlear (VIII)

Sensory: Hearing/Balance
Originates from Pons

Glossopharyngeal (IX)

Sensory: taste, monitors swallowing muscles, BP, blood gases
Motor: swallowing
Parasympathetic Motor: parotid gland (saliva)
Originates from Medulla oblongata

Vagus (X)

Motor: voice production, swallowing, BP/blood gases
Parasympathetic Motor: GI control, respiration, lowers HR
Sensory: taste
Originates from Medulla oblongata

Accessory (XI)

Motor: Head movements
Originates from Spinal Cord and Medulla Oblongata

Hypoglossal (XII)

Motor: Speech and Swallowing
Originates from Medulla Oblongata

Optic
Abducens
Oculomotor
Trochlear

4 nerves that control the eyeball

V, VII, IX, X, XI, XII

Cranial nerves that originate from Medulla Oblongata (numbers)-6

V, VI, VII, VIII

Cranial nerves that originate from Pons (numbers)-4

I

Cranial nerve that originates from Cerebrum (number)

II

Cranial nerve that originates from Diencephalon (number)

III, IV, V

Cranial nerves that originate from Midbrain (number)-3

XI

Cranial nerve that originates from Spinal Cord (number)

Olfactory

Cranial nerve that originates from Cerebrum (name)

Optic

Cranial nerve that originates from Diencephalon (name)

Oculomotor, Trochlear, Trigeminal

Cranial nerves that originate from Midbrain (name)-3

Trigeminal, Facial, Glossopharyngeal, Vagus, Accessory, Hypoglossal

Cranial nerves that originate from Medulla Oblongata (name)-6

Trigeminal, Abducens, Facial, Vestibulocochlear

Cranial nerves that originate from Pons (name)-4

Accessory

Cranial nerve that originates from Spinal cord (name)

Olfactory

Smell

Optic

vision

oculomotor

Movements of eyeball/upper eyelid
Pupil construction; muscles to focus lens

trochlear

movement of eyeball

trigeminal ophthalamic

Upper facial structures

Trigeminal Maxillary

Middle facial structures

Trigeminal Mandibular

Lower facial structures + anterior to ear
Mastication (chewing)

Abducens

movement of eyeball

Facial

Facial expression
Salivary/lacrimal glands
Taste

Vestibulocochlear

Hearing/Balance

Glossopharyngeal

Taste, monitors swallowing muscles, BP, blood gases
Swallowing
Parotid gland (saliva)

Vagus

Voice production, swallowing, BP, blood gases
Taste
GI control, respiration, lowers HR

Accessory

Head movements

Hypoglossal

Speech/Swallowing

Proprioception

Gives the brain information about tension and position of different skeletal muscles in the body

Proprioception

(all motor nerves have a sensory component for _________)

Oculomotor

This nerve control 4 of the 6 muscles and skeletal muscles in opening the eyelids

Parotid gland

What secretes saliva?