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anatomy > pns (ch 13) > Flashcards

pns (ch 13) Flashcards

1
Q

what is a nerve

A

a collection of axons outside of the CNS

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2
Q

characteristics of nerves

A

repairable
layers of collagen - tough

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3
Q

endoneurium is found…

A

around each axon

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4
Q

perineurium is found…

A

around each fascicle

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5
Q

epineurium is found…

A

around entire nerves

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6
Q

function of BVs

A

carrying O2 and nutrients
removing CO2 and wastes

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7
Q

olfactory n.
#
sensory for:
through:

A

I. (nerves to bulb to tract)
smell
olfactory foramina

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8
Q

optic n.
#
sensory for:
through:

A

II. (nerves to chiasm to tract)
sight
optic canal

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9
Q

oculomotor n.
#
motor to:
through:

A

III.
eye (4/6 extraocular eye muscles)
superior orbital fissure

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10
Q

trochlear n.
#
motor to:
through:

A

IV. (pulley)
superior oblique of eye
superior orbital fissure

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11
Q

trigeminal n.
#
sensory for:
motor to:
through:

A

V. (three twins)
face
chewing muscles
3 divisions

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12
Q

divisions of the trigeminal n.

A

ophthalmic
maxillary
mandibular

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13
Q

ophthalmic division
sensory for:
through:

A

eye/above it
superior orbital fissure to supraorbital foramen

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14
Q

maxillary division
sensory between:
through:

A

eyes and mouth
foramen rotundum to infraorbital foramen

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15
Q

mandibular division
sensory below:
motor to:
through:

A

mouth
chewing muscles
foramen ovale to mandibular foramen to mental foramen

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16
Q

abducens n.
#
motor to:
through:

A

VI. (abducts)
lateral rectus of eye
superior orbital fissure

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17
Q

facial n.
#
motor to:
sensory to:
through:

A

VII.
face muscles - expression, tear gland, salivary glands, nasal mucosa
anterior tongue - taste
internal acoustic meatus and stylomastoid foramen

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18
Q

vestibulocochlear n.
#
sensory for:
through:

A

VIII. (vestibule and cochlea)
balance and hearing
internal acoustic meatus

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19
Q

glossopharyngeal n.
#
sensory for:
motor to:
through:

A

IX. (tongue and throat)
posterior tongue (taste), BVs in neck
swallowing muscles
jugular foramen

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20
Q

vagus n.
#
sensory and motor to:
through:

A

X. (wandering)
anterior body cavity organs
(parasympathetic rest and digest: >90%)
jugular foramen

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21
Q

accessory n.
#
motor to:
through:

A

XI.
sternocleidomastoid and trapezius
jugular foramen

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22
Q

hypoglossal n.
#
motor to:
through:

A

XII. (below tongue)
tongue
hypoglossal canal

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23
Q

spinal nerves arise from…

A

roots

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24
Q

how many pairs of spinal nerves are there

A

31

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25
Q

the dorsal root is…

A

sensory (info/APs in)

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26
Q

the dorsal root ganglion contains…

A

somas of unipolar sensory neurons

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27
Q

the ventral root is…

A

motor (info/APs out)

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28
Q

the mixed spinal nerve is…

A

both sensory and motor

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29
Q

the mixed spinal nerve exits through…

A

the intervertebral foramina (between vertebrae)

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30
Q

rami means…

A

arms

31
Q

the dorsal ramus is…

A

sensory and motor to the area near the vertebrae
small in size

32
Q

the ventral ramus is…

A

sensory and motor to all other somatic areas
large in size

33
Q

communicating rami are…

A

thoracic
contains sympathetic motor axons

34
Q

numbering of cervical nerves/vertebrae

A

8, 7 (bc of atlas)

35
Q

numbering of thoracic nerves/vertebrae

A

12, 12

36
Q

numbering of lumbar nerves/vertebrae

A

5, 5

37
Q

numbering of coccygeal nerves/vertebrae

A

1

38
Q

dermatone means…

A

skin cuts

39
Q

the dermatone is…

A

a body map of skin area served by specific spinal nerves

40
Q

peripheral nerves are…

A

plexuses formed from ventral rami of the spinal nerves

41
Q

what are the 4 major nerve plexuses

A

cervical
brachial
lumbar
sacral

42
Q

the cervical plexus is located in…

A

the neck

43
Q

the brachial plexus is located in…

A

the arm

44
Q

the lumbar plexus is located in…

A

the anterior thigh

45
Q

the sacral plexus is located in…

A

the posterior thigh and leg

46
Q

the thoracic region does not form a plexus in…

A

the intercostal nerves

47
Q

the cervical plexus runs through…

A

C1 - C5

48
Q

the brachial plexus runs through…

A

C5 - T1

49
Q

the lumbar plexus runs through…

A

L1 - L4

50
Q

the sacral plexus runs through…

A

L5 - S4

51
Q

the phrenic nerve runs through…

A

C3 - C5

52
Q

the phrenic nerve supplies…

A

the diaphragm

53
Q

“C3, 4, and 5…

A

…keeps the diaphragm alive”

54
Q

axillary means…

A

armpit

55
Q

the axillary nerve is responsible for motor and sensory functions to…

A

two regions of the shoulder joint

56
Q

the musculocutaneous nerve is motor to…

A

the forearm flexors

57
Q

musculocutaneous means…

A

muscle skin

58
Q

name the forearm flexors

A

brachialis
brachioradialis
biceps brachii

59
Q

the musculocutaneous nerve is sensory to…

A

the anterior arm

60
Q

the median nerve is motor and sensory to…

A

the anterior/lateral forearm and hand

61
Q

the median nerve runs through…

A

the carpal tunnel

62
Q

the ulnar nerve is motor and sensory to…

A

the medial forearm and hand

63
Q

the funny bone refers to…

A

the area between the olecranon process and the medial epicondyle

64
Q

the radial nerve is motor and sensory to…

A

the posterior arm, forearm, and hand

65
Q

the radial nerve is responsible for…

A

almost all extensor motor function

66
Q

the femoral nerve is motor and sensory to…

A

the anterior thigh (quadriceps)

67
Q

the obturator nerve is motor and sensory to…

A

the medial thigh (adductors)

68
Q

sciatic means…

A

hip

69
Q

the sciatic nerve is motor and sensory to…

A

the posterior thigh (hamstrings)

70
Q

the sciatic nerve is made up of…

A

two nerves (tibial and common fibular)

71
Q

the tibial nerve is motor and sensory to…

A

the posterior leg

72
Q

the common fibular nerve is motor and sensory to…

A

the knee and anterior/lateral leg

73
Q

the common fibular nerve contains…

A

two branches: superficial and deep

74
Q

sciatica refers to…

A

a pinched sciatic nerve (leads to referred pain)

anatomy (6 decks)

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