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Flashcards in Cranial Nerves Deck (34):
1

What is Cranial Nerve 1

Olfactory nerve

2

What happens with loss of CN I

Anosmia (loss of sense of smell)

3

What is CN II?

Optic Nerve

4

What is the function of CNII?

sight pupillary reflexes

5

What happens with damage to CN II?

Monocular blindness, loss of pupillary constriction, absence of blink reflex

6

What is CN III?

Occulomotor

7

What is the function of CN III?

Elevates upper eyelid, moves eye (superior, medial and inferior rectus, inferior oblique)

8

What happens with damage to CN III?

ptosiss (drooping eyelid), dilation of pupil, loss of accommodation of the light reflex

9

What is CN IV?

Trochlear

10

What is the function of CN IV?

Innervates superior oblique muscle

11

What happens with damage to CN IV?

diplopia, failure to rotate eye up and out

12

What is CN V?

Trigeminal Nerve

13

What is the function of CN V?

mastication and sensory nerve for the head

14

What happens with damage to CN V?

Loss of facial sensation, weakness of the muscles of mastication, deviation of opened jaw to ipsilateral side

15

What is CN VI?

Abducens

16

What is the function of CN VI?

Innervates the lateral rectus musle, abducts the eye

17

What happens with damage to CN VI?

diplopia, medial strabismus, abductor paralysis of ipsilateral eye

18

What is CN VII?

Facial Nerve

19

What is the function of CN VII?

facial expression, speech articulation, winking, ingestion of food and drink, taste, salivary and nasal secretions

20

What happens with damage to CN VII?

ipsilateral facial paralysis, dry mouth, loss of taste on ANT 1/3 of tongue (Bells Palsy)

21

What is CN VIII?

Vestibularcochlear

22

What is the function of CN VII?

maintenance of equilibrium, hearing

23

What happens with damage to CN VIII?

vertigo, nystagmus, dysequilibrium, tinnitus, loss of hearing

24

What is CN IX?

Glossopharyngeal

25

What is the function of CN IX?

elevates pharynx, salivary secretion, taste

26

What happens with damage to CN IX?

slight dysphagia, partial dry mouth, loss of taste posterior 1/3 of tongue

27

What is CN X?

Vagus nerve

28

What is the function of CN X?

phonation, visceral sensations and reflexes, cardiac depressor, bronchoconstrictor, GI perstalsis and secretion

29

What happens with damage to CN X?

palpitation (forcible pulsation of the heart)

30

What is CN XI?

Accessory nerve

31

What is the function of CN XI?

deglutition (swallowing) and phonation (carotid part) movements of head and shoulders (spinal part)

32

What is CN XII?

Hypoglossal nerve

33

What is the function of CN XII?

tongue movements

34

What happens with damage to the hypoglossal nerve?

unilateral paralysis of the tongue, deviation to the ipsilateral side with protrusion