Cranial nerves

Question 1

Where is the olfactory nerve located (sensory)

Answer 1

Under brain

Question 2

Where is optic nerve (sensory)

Answer 2

under brain (looks like an s0

Question 3

Where dies optic nerve pass through

Answer 3

Optic canal

Question 4

What is the oculomotor nerve

Answer 4

Has motor and parasympathetic component

motor- controls 4 out of 6 oblique rector muscles (eye muscles)

parasympathetic- regulates sphincter pupilae (problem with this nerve may mean a dilated pupil)

Question 5

What us the Trochlear nerve

Answer 5

motor

controls superior oblique eye muscle. Rotates the eye in and downwards

Question 6

What is the trigeminal nerve

Answer 6

Sensory
Motor

motor component- controls muscle of mastication (damage indicates trouble with jaw movements)

sensory- sensation from face

Question 7

What are the branches of the trigeminal nerve and where do they pass through

Answer 7

Mandibular branch (passes through foramen ovale)

Ophthalmic branch (passes through superior orbital fissure)

Maxillary branch (passes through foramen rotundum)

Question 8

What is the abducens nerve and where does it originate

Answer 8

Motor

Regulates movement of the eye (lateral rectus muscle which is responsible from abducting eye away from midline)

Originates in abducens nucleus

Question 9

Where does abducens nerve pass through and what else does it pass through with

Answer 9

superior orbital fissure

passes through this with optic nerve, trochlear nerve and opthalmic branch of the trigeminal nerve)

Question 10

Which cranial nerve number is olfactory Neve

Answer 10

CN1

Question 11

Which cranial nerve number is optic nerve

Answer 11

CN2

Question 12

Which cranial nerve number is oculomotor nerve

Answer 12

CN3

Question 13

Which cranial nerve number is trochlear nerve

Answer 13

CN4

Question 14

Which cranial nerve number is trigeminal nerve

Answer 14

CN5

Question 15

Which cranial nerve number is abducens nerve

Answer 15

CN6

Question 16

Which cranial nerve number is facial nerve

Answer 16

CN7

Question 17

Which cranial nerve number is vestibule-cochlear nerve

Answer 17

CN8

Question 18

Where does facial nerve originate

Answer 18

Facial motor nucleus

Question 19

Where does the vestibule-nuclear nerve originate

Answer 19

Vestibular nuclei

Question 20

What is the facial nerve

Answer 20

Sensory
Motor
Parasympathetic

Motor- muscles in face. Problems with this nerve may mean paralysis in the face and drooling

Parasympathetic- stimulate the salivary gland (originates in salivary nucleus)

Sensory- Sense of taste (particularly anterior portion of tongue)

Question 21

Where does facial nerve pass through

Answer 21

Internal acoustic meatus

Question 22

What is the vestibulocochlear nerve

Answer 22

Sensory

Sensory info from ear. Damage may mean impairment to hearing and persistent head tilt

Question 23

Where does the vestibulocochlear nerve pass through

Answer 23

Internal acoustic meatus

Question 24

What cranial number is the glossopharyngeal nerve

Answer 24

CN9

Question 25

Which cranial number isn vagus nerve

Answer 25

CN10

Question 26

Where do the glossopharyngeal and vagus nerve pass through

Answer 26

Jugular foramen

Question 27

What is the glossopharyngeal nerve

Answer 27

sensory Motor parasympathetic Originates from nucleus ambiguous motor-controls movement of stylopharyngeus muscle. (If you stimulate pharynx and patient gags, then there could be damage to this nerve) parasympathetic - originates in salivatory nucleus. Innervates the salivation glands sensory- brings taste to the posterior aspect of the tongue

Question 28

What is the vagus nerve and where does it originate

Answer 28

Sympathetic motor parasympathetic originates nuclei ambiguous Motor- innervates soft palate, pharynx and larynx (changes in voice could indicate damage to this) parasympathetic- Rest and digest, slows heart rate, stimulates digestion, regulates changes in bp. sensory- bring sensory info from muscles of larynx and pharynx to brain (particularly to solitary nucleus). Also brought to spinal trigeminal nucleus. (problems indicate changes to gag reflex)

Question 29

Which cranial nerve number is hypoglossal nerve

Answer 29

CN12

Question 30

Where does hypoglossal nerve originate

Answer 30

Hypoglossal nucleus

Question 31

What is the hypoglossal nerve

Answer 31

motor nerve goes through hypoglossal canal Innervates muscles of the tongue. Damage to the nerve or nucleus shows ipsilateral deviation of tongue, or damage in movement of tongue, vibration of tongue or wasting away of tongue

Question 32

What cranial nerve number is the accessory nerve

Answer 32

CN11

Question 33

What is the accessory nerve

Answer 33

Motor nerve Originates in accessory nucleus in medulla Originates from spinal cord Innervates SCM and trapezius mm. Damage indicated by having trouble moving head from side to side.

Question 34

Where does the accessory nerve pass through

Answer 34

Jugular foramen

Question 35

Which nerves pass through the jugular foramen

Answer 35

Glosso-pharyngeal nn Vagus nerve Accessory nerve

Question 36

Which nerves originate from salivatory nucleus

Answer 36

Facial (CN7) | Glossopharyngeal (CN9)

Question 37

Which nerves originate from nucleus ambiguus

Answer 37

Glossopharyngeal (CN9) | vagus (CN10)

Question 38

Which nerves originate from vestibular nuclei

Answer 38

Vestibulocochlear (CN8)

Question 39

Which nerves originate from cochlear nucleus

Answer 39

Vestibulocochlear (CN8)

Question 40

Which nerves originate from solitary nucleus

Answer 40

all of them sensory: Facial Glossopharyngeal Vagus

Question 41

Where does the parasympathetic aspect of vagus nerve originate from

Answer 41

Dorsal motor nucleus of vagus

Question 42

Which nucleus spans the entire length of the brainstem

Answer 42

Trigeminal nucleus

Question 43

Pneumonic for cranial nerves for if its sensory/motor/parasympathetic

Answer 43

``` Some (s) Say (s) Marry (mp) Money (m) But (sm) My (m) Brother (smp) Says (s) Big (smp) Brains (smp) Matter (m) More (m) ```

Question 44

Pneumonic for cranial nerves

Answer 44

``` Oh (olfactory) Once (optic) One (oculomotor) Takes (trochlear) The (trigeminal) Anatomy (abducens) Final (facial) Very (vestibulocochlear) Good (glossopharyngeal) Vacations (vagus) (11) Are (accessory) (12) Heavenly (hypoglossal) ```