Cranial Nerves Flashcards Preview

Clinical Anatomy - Trunk/Thorax > Cranial Nerves > Flashcards

Flashcards in Cranial Nerves Deck (44)
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1

CN I

olfactory nerve

2

CN I - Components

special sensory (olfaction)

3

CN I - Actions

SpS: carries afferent impulses for the sense of smell

4

CN II

optic nerve

5

CN II - Components

special sensory (vision)

6

CN II - Actions

SpS: carrying afferent impulses for vision

7

CN III

oculomotor nerve

8

CN III - Components

somatic motor
visceral motor

9

CN III - Actions

SM: innervation to 4 of 6 extraocular muscles
functions in proprioception
VM: innervation (pupil and ciliary muscles)

10

CN IV

trochlear nerve

11

CN IV - Components

somatic motor

12

CN IV - Actions

SM: innervates the superior oblique muscles (turns eye inferolaterally)

13

CN V

trigeminal nerve

14

Divisions of CN V (3)

opthalmic
maxillary
mandibular

15

CN V*1

opthalmic nerve

16

CN V*1 - Components

somatic sensory

17

CN V*1 - Actions

SS: sensation from cornea, forehead, scalp, eyelids, nose and mucosa of nasal cavity

18

CN V*2

maxillary nerve

19

CN V*2 - Components

somatic sensory

20

CN V*2 - Actions

SS: sensation of skin over maxilla and palate

21

CN V*3

mandibular nerve

22

CN V*3 - Components

somatic sensory
somatic motor

23

CN V*3 - Actions

SS: sensation from skin over mandible and anterior 2/3 of tounge
SM: muscles of mastication

24

CN VI

abducent nerve

25

CN VI - Components

somatic motor

26

CN VI - Actions

SM: innervates lateral rectus muscle (lateral eye movement)

27

CN VII

facial nerve

28

CN VII - Components

somatic motor
somatic sensory
special sensory
visceral motor

29

CN VII - Actions

SM: facial expressions
SS: sensation from skin of external acoustic meatus
SpS: taste from anterior 2/3 of tongue
VM: tranmittal of autonomic impulses to lacrimal and salivary glands

30

CN VIII

vestibulocochlear nerve