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anatomy > exam 3 nerves > Flashcards

exam 3 nerves Flashcards

1
Q

name of CN I

A

olfactory

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2
Q

name of CN II

A

optic

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3
Q

name of CN III

A

oculomotor

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4
Q

name of CN IV

A

trochlear

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5
Q

name of CN V

A

trigeminal

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6
Q

name of CN VI

A

abducens

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7
Q

name of CN VII

A

facial

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8
Q

name of CN VIII

A

vestibulocochlear

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9
Q

name of CN IX

A

glossopharyngeal

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10
Q

name of CN X

A

vagus

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11
Q

name of CN XI

A

accessory

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12
Q

name of CN XII

A

hypoglossal

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13
Q

which nerves are sensory only

A

I, II, VIII

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14
Q

which nerves are motor only

A

III, IV, VI, XI, XII

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15
Q

which nerves are mixed

A

V, VII, IX, X

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16
Q

location of olfactory nerve

A

axons from olfactory bulb

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17
Q

function of olfactory nerve

A

smell, from breathing in nose, goes through cribriform plate of ethmoid bone

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18
Q

location of optic nerve

A

spans from the optic chiasm to eyeball, specifically connects to blind spot in eye

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19
Q

function of optic nerve

A

sight, take photoreceptors to brain, travels through optic canal of spheniod bone

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20
Q

location of vestibulocochlear nerve

A

connects ear to brain

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21
Q

function of vestibulocochlear nerve

A

collects info about equilibrium and controls hearing and balance

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22
Q

location of oculomotor nerve

A

travels through superior orbital fissure of the sphenoid bone

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23
Q

function of oculomotor nerve

A

moves the eye, constricts pupil, adjusts lens

  • connects to iris and ciliary body
  • moves superior, medial, and inferior rectus, and inferior oblique
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24
Q

function of trochlear nerve

A

moves superior oblique muscles, inferior and lateral

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25
Q

location of abducens

A

moves lateral rectus, abducts eye

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26
Q

function of accessory nerve

A

attaches trapezius and sternocleidomastoid

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27
Q

function of hypoglossal nerve

A

attaches to several muscles of tongue

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28
Q

function of trigeminal nerve

A

3 branches of nerves that are the muscles of mastication (temporalis, masseter, pterygoid)

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29
Q

what are the 3 branches of the trigeminal nerve

A

V1: ophthalmic
V2: maxillary
V3: mandibular (motor paart)

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30
Q

function of facial nerve

A

muscles of facial expression

  • provides sensory innervation to anterior tongue and glands
  • taste sensation 2/3 anterior tongue
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31
Q

location of facial nerve

A

junction of pons/medulla through parotid gland to facee

32
Q

location of glossopharyngeal nerve

A

lateral medulla to pharynx/neck

33
Q

function of glossopharyngeal nerve

A

sensory to throat

  • motor to 1 little nerve
  • innervates parotid gland to produce saliva to produce saliva
  • innervates carotid body to detect blood pressure
  • sensory to posterior 1/3 tongue
  • DETERMINES texture
34
Q

function of vagus nerve

A

sensory and motor to smooth muscle, cardiac muscle, and glands in thorax and abdomen
“ the wonderer”

35
Q

what nerve senses a piece of food in throat?

A

glossopharyngeal (IX)

36
Q

what nerve causes muscles to respond?

A

vagus (X)

37
Q

how many pairs of spinal nerves are there

A

31

38
Q

how many cervical nerves are there? and what is the location?

A

8

C1-C8

39
Q

how many thoracic nerves are there? and what is the location?

A

12

T1-T12

40
Q

how many lumbar nerves are there? and what is the location?

A

5

L1-L5

41
Q

how many sacral nerves are there? and what is the location?

A

5

S1-S5

42
Q

how many coccygeal nerves are there? and what is the location?

A

1

Coc 1

43
Q

which nerve system are spinal nerves located

A

PNS but connected to CNS

44
Q

what are the major differences between spinal and cranial nerves

A
  • spinal nerve connected to spinal cord, not brain
  • arabic numbers, not roman
  • generally longer
45
Q

anterior root contains what kind of axons

A

motor neuron axons

46
Q

posterior root contains what kind of axons

A

sensory neuron axons

47
Q

spinal nerve contains what kind of axons

A

motor and sensory axons

48
Q

function of posterior primary ramus

A

takes sensory and motor info to the back (of body)

49
Q

function of anterior primary ramus

A

takes sensory and motor info to the rest of the body

50
Q

dermatomes

A

single spinal nerve sensory innervation

51
Q

nerve plexus

A

a network of converging and/or diverging axon

  • usually from anterior primary rami
  • thoracic nerves don’t form plexus bc of ribs
52
Q

location of cervical plexus

A

anterior rami of C1-C5 spinal nerves

53
Q

function of cervical plexus

A
  • sensory: skin of neck, ear & shoulders

- motor: anterior neck muscles

54
Q

location of phrenic nerve

A

down through thorax

C3, C4, C5

55
Q

function of phrenic nerve

A

supplies diaphragm

helps assist breathing, life or death

56
Q

brachial plexus lcoation

A

anterior rami of C5-T1 spinal nerves

57
Q

function of brachial plexus

A

innervates motor and sensory of upper limb

58
Q

nerves of the brachial plexus

A 
axillary
musculocutaneous
radial
median
ulnar
59
Q

function of axillary nerve

A

sensory: lateral shoulder
motor: deltoid and teres major

60
Q

location of axillary nerve

A

posterior of humerous

61
Q

function of musculocutaneous nerve

A

sensory: lateral forearm
motor: most muscles on anterior surface arm
- coracobrachialis
- biceps brachii
- brachialis

62
Q

function of radial nerve

A

sensory: posterior arm, forearm, hand
motor: posterior arm and forearm

63
Q

function of median nerve

A

sensory: lateral palm of hand
motor: most anterior forearm muscles, thenar, lumbricals of fingers 2 and 3

64
Q

function of ulnar nerve

A

sensory: medial hand
motor:
anterior forearm
- medial 1/2 flexor digitorum profundus
- flexor carpi ulnaris
hand
- hypothenar
- lumbricals 4 and 5
- interossei

65
Q

location of lumbar plexus

A

anterior rami of L1-L4 spinal nerves

66
Q

function of lumbar plexus

A

innervates inferior abdominal wall and part of lower limb

67
Q

nerves of lumbar plexus

A

femoral and obturator

68
Q

function of femoral nerve

A

sensory: anterior thigh
motor: anterior thigh, extend knee

69
Q

function of obturator nerve

A

sensory: medial thigh
motor: medial thigh (abductor)

70
Q

location of sacral plexus

A

anterior rami of L4, L5, and S1, S2, S3 spinal nerves

71
Q

function of sacral plexus

A

innervates buttocks, pelvic structures and majority of lower limb

72
Q

nerves of sacral plexus

A

sciatic
tibial
common fibular

73
Q

function of sciatic nerve

A

splits into tibial and common fibular nerve

74
Q

function of tibial nerve

A

sensory: posterior leg/sole of foot
motor: muscles of most posterior thigh, posterior leg, sole of foot

75
Q

function of common fibular nerve

A

sensory: anterior and lateral leg, dorsum of leg
motor: muscles of anterior and lateral leg, dorsum of foot

anatomy (15 decks)

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