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Anatomy3651 > Spinal Cord and Spinal Nerves > Flashcards

Spinal Cord and Spinal Nerves Flashcards

1
Q

The ____ ___ is the end of the spinal cord

A

conus medullaris

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2
Q

The two types of multipolar neurons are what?

A

interneurons, motor neurons

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3
Q

Interneurons are completely within the ______

A

CNS

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4
Q

The dorsal root and ventral root join together to form the ____ _____

A

spinal nerve

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5
Q

Many points of contact of pairs of spinal nerves form a ____ ____ _____

A

spinal cord segment

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6
Q

___ ____ is attached to the surface of the spinal cord

A

pia mater

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7
Q

____ ____ is loose around the spinal cord with subarachnoid space containing CSF

A

arachnoid mater

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8
Q

The cervical region has ___ pairs of spinal nerves

A

8

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9
Q

the thoracic region has ____ pairs of spinal nerves

A

12

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10
Q

The lumbar region has ___ pairs of spinal nerves

A

5

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11
Q

the coccygeal region has ___ pairs of spinal nerves

A

1

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12
Q

the cervical region nerves innervate the __ ____

A

upper extremities

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13
Q

the lumbar region nerves innervate the ___ _____

A

lower extremities

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14
Q

The sacral region nerves innervate the ____ _____n

A

lower extremities

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15
Q

the coccygeal region nerves innervate around the ____

A

anus

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16
Q

The spinal cord ends at ____

A

L1

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17
Q

Below L1 is the start of what?

A

cauda equina (dorsal and ventral roots

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18
Q

The spinal cord is also called what?

A

conus meddularis

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19
Q

The conus medullaris, or, inferior end of the spinal cord, is between what vertebrae?

A

L1 and L2

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20
Q

What is known as 1 synapse of a reflex?

A

monosynaptic reflex

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21
Q

Reflexes involve what type of neuron?

A

unipolar (and interneurons)

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22
Q

In a monosynaptic reflex, the ____ is lengthened and the ____ stretches

A

tendon, muscle

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23
Q

What is known as many synapses involved in a reflex and occurs after exposure to pain?

A

polysynaptic reflex

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24
Q

Polysynaptic reflexes involve what types of neurons?

A

unipolar, interneurons

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25
Q

____ is a network of spinal nerves that allow the nerves in our bodies to be formed from various levels of spinal nerves

A

plexus

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26
Q

What is the upper extremity plexus?

A

brachial

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27
Q

What is the lower extremity plexus?

A

lumbosacral

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28
Q

Where is the extra C8 nerve located?

A

between C7 and T1

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29
Q

How many roots are in the brachial plexus?

A

5

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30
Q

what are the 5 brachial plexus roots?

A

C5, C6, C7, C8, T1

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31
Q

What are the 3 brachial plexus trunks?

A

superior, middle, inferior

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32
Q

How many brachial trunks are there?

A

3

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33
Q

How many brachial cords are there?

A

3

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34
Q

What are the 3 brachial cords?

A

lateral, posterior, middle

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35
Q

The superior trunk splits into what roots?

A

lateral, posterior

36
Q

The middle trunk splits into what roots?

A

lateral, posterior

37
Q

The inferior trunk splits into what cords?

A

medial, posterior

38
Q

The lateral cord is composed of what trunks?

A

the anterior superior and middle

39
Q

The posterior cord is composed of what trunks?

A

posterior superior, middle, and inferior

40
Q

The medial cord is composed of what trunks?

A

anterior of inferior

41
Q

How many nerves/branches are there?

42
Q

What are the 3 nerves/branches?

A

musculocutaneous, median, ulnar

43
Q

An injury at the lateral cord would affect what nerves?

A

musculocutaneous, 1/2 of median

44
Q

An injury at the posterior cord would affect what nerves?

A

radial, axillary

45
Q

An injury at the medial cord would affect what nerves?

A

ulnar, 1/2 of median

46
Q

The musculotaneus nerve branches from what cord?

47
Q

the median nerve branches from what cords?

A

1/2 lateral, 1/2 medial

48
Q

The ulnar nerve branches from what cord?

49
Q

The radial nerve branches from what cord?

50
Q

The axillary nerve branches from what cord?

51
Q

What is the order of the brachial plexus components?

A

roots, trunks, divisions, cords, branches/nerves

52
Q

The axillary nerve affects the sensory of what?

A

lateral shoulder

53
Q

An injury to the axillary nerve would affect what movements?

A

shoulder abduction

54
Q

The musculotaneous nerve affects the sensory of what?

A

anterior arm, lateral forearm

55
Q

an injury to the musculotaneus nerve would affect what movements?

A

elbow flexion, supination

56
Q

The radial nerve affects the sensory of what?

A

back of arm, forearm, hand

57
Q

an injury to the radial nerve would affect what movements?

A

elbow, wrist, finger extension, supination

58
Q

the median nerve affects the sensory of what?

A

palmar hand, digits 1,2,3, half of 4

59
Q

an injury to the median nerve affects what movements?

A

wrist and finger, flexion, pronation

60
Q

the ulnar nerve affects the sensory of what?

A

lateral hand

61
Q

an injury to the ulnar nerve affects what movements?

A

finger abduction and adduction

62
Q

the superior and inferior gluteal nerve innervate what muscle group?

63
Q

the femoral nerve affects the sensory of what?

A

anterior thigh, medial leg and foot

64
Q

An injury to the femoral affects what movements?

A

hip flexion, knee extension

65
Q

the obturator affects the sensory of what?

A

upper medial thigh

66
Q

An injury to the obturator nerve affects what movement?

A

hip adduction

67
Q

The sciatic nerve separates into what nerves?

A

tibial, common fibular

68
Q

the tibial nerve affects the sensory of what?

A

plantar foot

69
Q

an injury to the tibial nerve affects what movements?

A

hip extension, knee, plantar, and toe flexion

70
Q

the common fibular nerve separates into what nerves?

A

superficial, deep

71
Q

the superficial fibular nerve affects the sensory of what?

A

dorsum foot, not skin between toes 1 and 2

72
Q

an injury to the superficial fibular nerve affects what movements?

A

eversion of foot

73
Q

the deep fibular nerve affects the sensory of what?

A

between toes 1 and 2

74
Q

an injury to the deep fibular nerve affects what movements?

A

dorsiflexion, extension of toes, inversion of foot

75
Q

dorsiflexion, extension of toes, and inversion are affected by what nerve?

A

deep fibular

76
Q

eversion of foot is affect by what nerve?

A

superficial fibular nerve

77
Q

hip extension, and knee, plantar, and toe flexion are affected by what nerve?

78
Q

hip adduction is affected by what nerve?

79
Q

hip flexion and knee extension are affected by what nerve?

80
Q

finger adduction and abduction are affected by what nerve?

81
Q

pronation, and wrist and finger flexion are affected by what nerve?

82
Q

supination, and elbow, wrist, and finger extension are affected by what nerve?

83
Q

elbow flexion and supination are affected by what nerve?

A

muscolocutaneous

84
Q

should abduction is affected by what nerve?

85
Q

What cranial nerve innervates the lateral rectus?

A

6 (abducens)

86
Q

What cranial nerve innervates the superior oblique?

A

4 (trochlear)

87
Q

What cranial nerve innervates the inferior oblique, superior rectus, medial rectus, levator palpebrae superioris, and inferior rectus?

A

3 (oculomotor)

Anatomy3651 (33 decks)

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