Cranial nerves

Question 1

Cranial nerve 1

Answer 1

olfactory

Question 2

What is the origin of cranial nerve 1?

What is the function?

Answer 2

origin: cerebrum

Function: sensory olfaction

Question 3

cranial nerve 2

Answer 3

optic

Question 4

what is cranial nerve 2 origin?

What is the function?

Answer 4

origin: diencephalon

function: sensory vision

Question 5

cranial nerve 3

Answer 5

oculomotor

Question 6

what is cranial nerve 3 origin?

What is the function? (2)

Answer 6

origin: brain stem

functions:
- motor –> 4 eye muscles; eyelid
- Autonomic parasympathetic: contricts pupil, near focus

Question 7

what is cranial nerve 4 origin?

What is the function?

Answer 7

origin: brainstem

function: motor –> superior oblique

located in corners of eyes closer to nose

Question 7

cranial nerve 4

Answer 7

trochlear

Question 8

cranial nerve 5

Answer 8

trigeminal

Question 9

what is cranial nerve 5 origin?

What is the function? (2)

Answer 9

origin: brain stem

function:
- somatic sensory
- motor: mastication

*thickest nerve; located on cheeks

Question 10

cranial nerve 6

Answer 10

Abducent

Question 11

what is cranial nerve 6 origin?

What is the function?

Answer 11

origin: brain stem

Function: motor –> lateral rectus

located in corners of eyes closer to ears

Question 12

cranial nerve 7

Answer 12

Facial

Question 13

what is cranial nerve 7 origin?

What is the function? (3)

Answer 13

origin: brainstem

Functions:
- motor –> facial expression
- Sensory –> 2/3 of anterior tongues taste
- Autonomic parasympathetic –> 2 salivary glands, lacrimal glands

Question 14

cranial nerve 8

Answer 14

vestibulocochlear

Question 15

what is cranial nerve 8 origin?

What is the function?

Answer 15

Origin: Brain stem

Function: Sensory –> Hearing; orientation in space

located in the ears

Question 16

cranial nerve 9

Answer 16

glossopharyngeal

Question 17

what is cranial nerve 9 origin?

What is the function? (2)

Answer 17

origin: brainstem

function:
- sensory –> posterior 13 of tongue; pharynx - taste

• autonomic parasympathetic: parotid salivary gland

Question 18

cranial nerve 10

Answer 18

vagus

Question 18

what is cranial nerve 10 origin?

What is the function? (3)

Answer 18

origin: brainstem

function:
- sensory: laryngopharynx, larynx, t/a organs
- motor: larngopharynx, tongue
- autonomic parasympathetic: thoracic and abdominal organs

Question 18

cranial nerve 11

Answer 18

accessory

Question 19

what is cranial nerve 11 origin?

What is the function?

Answer 19

origin: brainstem

function: motor –> trapezius, sternocleidomastoid

Question 20

cranial nerve 12

Answer 20

hypoglossal

Question 21

what is cranial nerve 12 origin?

What is the function?

Answer 21

origin: brainstem

function: motor –> tongue; pharynx

Question 22

what cranial nerve is linked to lack of smell sensations?

Answer 22

olfactory (I)

Question 23

what cranial nerve is linked to absent pupil reflex?

Answer 23

oculomotor (III)

Question 24

what cranial nerve is linked to blindness?

Answer 24

optic (II)

Question 25

what cranial nerve is linked to dropped eyelid (lazy eye)?

Answer 25

oculomotor (III)

Question 26

what cranial nerve is linked to dropped face (Bell palsy)?

Answer 26

facial (VII)

Question 27

what cranial nerve is linked to toothache?

Answer 27

trigeminal (V)

Question 28

what cranial nerve is linked to deafness and/or disorientation?

Answer 28

vestibulocochlear (VIII)

Question 29

what cranial nerve is linked to loss of taste sensation?

Answer 29

facial (VII)

Question 30

what cranial nerve is linked to dysphagia (difficulty swallowing)?

Answer 30

hypoglossal (XII)/ vagus (X)

Question 31

what cranial nerve is linked to unable to follow the direction of movement when doctor examine your eyes?

Answer 31

oculomotor (III)/trochlear (IV)/ abducent (VI)

Question 31

what cranial nerve is linked to paralysis GI tract?

Answer 31

vagus (X)