Cranial Nerves

Question 1

Trad: Oh Oh Oh To Touch And Feel Very Good Velvet Ah Heaven

Answer 1

Terminal, Olfactory, Optic, Oculomotor, Trochlear, Trigeminal, Abducens, Facial, Vestibulocochlear, Glossopharyngeal, Vagus, Accessory, Hypoglossal

Question 2

Pneumonic to remember function

Answer 2

Some Say Money Matters, But My Brother Says Big Brains Matter More

Question 3

Terminal Nerve

Answer 3

Pheromone detection and sexual development.`

Question 4

Olfactory Nerve

Answer 4

Nerve I, olfaction, sensory`

Question 5

Optic Nerve

Answer 5

Nerve II, vision, sensory

Question 6

Oculomotor Nerve

Answer 6

Nerve III, Motor
Innervates 4 extraocular muscles:
Superior rectus
Inferior Rectus
Medial Rectus
Inferior oblique
Innervates levator palpebrae (keeps eyelid up)
Innervates iris constrictor

Question 7

Trochlear Nerve

Answer 7

Nerve IV, Motor
Innervates superior oblique muscle (looking inferiorly, maintaining horizontal horizon)
Receives input from vestibulocochlear nerve and cerebellum

Question 8

Trigeminal Nerve

Answer 8

Nerve V, Both
Innervates muscles of mastication (chewing)
Sensory for face, tongue, teeth, and cornea
Cutaneous sensation for the meninges
3 branches: V1, V2, V3

Question 9

Abducens Nerve

Answer 9

Nerve VI, Motor

Innervates the lateral rectus muscle (causes abduction)

Question 10

Facial Nerve

Answer 10

Nerve VII, Both
Non verbal communication
Innervates muscles of facial expression and lacrimal gland and obicularis occuli
Branches span the entire face
Sensory for taste (gustation), anterior 2/3 of tongue

Question 11

Vestibulocochlear Nerve

Answer 11

Nerve VIII, Sensory
Two nerves combined
Hearing (cochlear) and balance (vestibular)

Question 12

Glossopharyngeal Nerve

Answer 12

Nerve IX, Both
Motor for for swallowing (deglutition) muscles + tongue
Motor for salivary glands
Sensory taste, posterior 1/3 of tongue
Visceral sensory for carotid sinus/bodies

Question 13

Vagus Nerve

Answer 13

Nerve X, Both
Parasympathetic innervation to thoracic and abdominal viscera
Motor control to larynx
Motor control to viscera
Sensory to tragus and meatus (ear hole)
Sensory to aortic arch
Sensory taste (throat and epiglottis)

Question 14

Accessory Nerve

Answer 14

Nerve XI, Motor
Actually a spinal nerve, C1-C6
Somatic motor for head turning muscles (neck)

Question 15

Hypoglossal Nerve

Answer 15

Nerve XII, Motor

Intrinsic and extrinsic muscles below the tongue

Question 16

Reflexes

Answer 16

Pupillary light: dilation and constriction of the pupil

Glabellar reflex: twitching up of the facial muscles when the glabella is tapped, lost after childhood, can return if there is neurological damage

Vestibulo-ocular reflex:
Nystagmus - following a moving object until you can’t and then quickly locking onto a new one
Cold water sprays into ear - eyes twitch side to side mimicking nystagmus, balance is lost