Anatomy of spinal nerves Flashcards

1
Q

Where is C2 dermatome located?

A

back of scalp and adams apple

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2
Q

Where is C3 dermatome located?

A

back of neck and jugular notch

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3
Q

Where is C4 dermatome located?

A

clavicle and shoulder tip

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4
Q

Where is the C5 dermatome located?

A

badge patch

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5
Q

Where is the C6 dermatome located?

A

thumb

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6
Q

Where is the C7 dermatome located?

A

middle finger

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7
Q

Where is C8 dermatome located?

A

little finger

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8
Q

Where is T1 located?

A

medial forearm

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9
Q

Where is T2 dermatome located?

A

medial arm and sternal angle

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10
Q

Where is T4 dermatome located?

A

male nipple

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11
Q

where is T10 dermatome located?

A

umbilicus

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12
Q

Where is T12 dermatome located?

A

pubic symphysis

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13
Q

Where is L1 dermatome located?

A

groin

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14
Q

Where is L2 dermatome located?

A

anterior thigh

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15
Q

Where is L3 dermatome located?

A

anterior knee

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16
Q

Where is L4 dermatome located?

A

medial malleolus

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17
Q

Where is L5 dermatome located?

A

dorsum of foot

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18
Q

Where is S1 dermatome located?

A

heel

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19
Q

Where is S2 dermatome located?

A

posteiror knee

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20
Q

Where is S3 dermatome located?

A

buttock

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21
Q

Where is S4 dermatome located?

A

perineum

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22
Q

Where is S5 dermatome located?

A

perianal skin

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23
Q

Where is the nerve point of neck?

A

just above midpoint of posterior border of SCM

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24
Q

What are the branches of the cervical plexus?

A

lesser occipital (C2); great auricular nerve(C2,3); transverse cervical (C2,3) and supraclavicular (C3,4) nerves

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25
Q

What is the only spinal nerve that does any facial sensation?

A

greater auricular nerve

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26
Q

What is the cutaneous innervation of the posteiror neck?

A

posteiror rami of spinal nerves C2-C8

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27
Q

What is the cutaneous innervation of the upper anterolateral trunk ?

A

intercostal nerves

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28
Q

What nerves innervate the lower anterolateral trunk wall?

A

iliohypogastric and ilioinguinal nerves

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29
Q

What supplies the anatomical snuffbox?

A

radial nerve

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30
Q

What innervates the medial arm and forearm?

A

T1 and T2 anterior rami

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31
Q

What muscles do nerves of the cervical plexus innervate?

A

neck postural and strap muscles; diaphragm

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32
Q

What muscles do nerves of the brachial plexus innervate?

A

muscles of the upper limb; extrinsic back muscles

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33
Q

What muscles do T2-L3 innervate?

A

postural back muscles; intercostal muscles and anterolateral abdo wall

34
Q

What muscles do nerves of the lumbosacral plexus innervate?

A

lower limb and perineal skeletal muscles

35
Q

What muscle does C5 innervate?

A

deltoid

36
Q

How do you test C5 myotome?

A

abduction

37
Q

What muscles does C7 innervate?

A

pec. major and latissimus dorsi

38
Q

How do you test C7 myotome?

A

adduction

39
Q

What muscles does C8 innervate in the hand?

A

digit flexors

40
Q

What muscles does C7 innervate in the hand?

A

digit extensors

41
Q

What muscles does T1 innervate?

A

dorsal and palmar interossei

42
Q

What nerve innervates biceps?

A

C5,6

43
Q

What nerves innervate triceps brachii?

A

C7,8

44
Q

What nerves innerate the carpal flexors?

A

C6,7

45
Q

What nerves innervate the carpal extensors?

A

C7,8

46
Q

What nerves innerate psoas major?

A

L2,L3

47
Q

What nerves are involved in hip flexion?

A

L2,3

48
Q

What nerves are involved in hip extension?

A

L5,S1

49
Q

What nerves are invovled in knee flexion?

A

L5,S1

50
Q

What nerves are invovled in knee extension?

A

L3,4

51
Q

What nerves are invovled in dorsiflexion?

A

L4,5

52
Q

What nerves are invovled in plantar flexion?

A

S1,2

53
Q

What nerve is involved in inversion?

A

L4

54
Q

What nerve is involved in eversion?

A

L5,S1

55
Q

What spinal nerve is involved in the brachial reflex?

A

C5

56
Q

What spinal nerve is involved in supinator/brachioradialis reflex?

A

C6

57
Q

what nerve is involved in trceps reflex?

A

C7

58
Q

What nerve is tested by knee reflex?

A

L4

59
Q

What nerve is tested by ankle reflex?

A

S1

60
Q

biceps jerk?

A

C5/C6

61
Q

supinator jerk (brachioradialis)

A

C5/C6

62
Q

triceps jerk?

A

C6/C7

63
Q

quadriceps jerk?

A

L3/L4

64
Q

achilles tendon jerk?

A

S1/S2

65
Q

should abduction?

A

C5

66
Q

shoulder adduction?

A

C5-7

67
Q

elbow flexion?

A

C5,6

68
Q

elbow extension

A

C7

69
Q

wrist flexion?

A

C7-8

70
Q

wrist extension?

A

C7

71
Q

finger flexion?

A

C8

72
Q

finger extension?

A

C7

73
Q

finger abduction?

A

T1

74
Q

hip flexion?

A

L1,2

75
Q

hip adduction?

A

L2,3

76
Q

hip extension?

A

L5-S1

77
Q

knee flexion?

A

L5-S1

78
Q

knee extension?

A

L3,4

79
Q

ankle dorsiflexion?

A

L4

80
Q

ankle eversion?

A

L5-S1

81
Q

ankle plantar flexion?

A

S1,2

82
Q

big toe extension?

A

L5