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Neuro > #2 & 3. Plexuses > Flashcards

#2 & 3. Plexuses Flashcards

1
Q

what does the Lesser occipital innervate?

A

skin of scalp posterior and superior to ear

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2
Q

Where does the lesser occipital originate from?

A

C2

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3
Q

What does the great auricular innervate?

A

skin anterior, inferior and over ear and over parotid glands

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4
Q

Where does the great auricular originate from?

A

C2-C3

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5
Q

What does the transverse cervical innervate?

A

skin over anterior aspect of neck

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6
Q

Where does the transverse cervical originate from?

A

C2-C3

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7
Q

What does the supraclavicular innervate?

A

skin over superior portion of chest and shoulder

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8
Q

Where does the supraclavicular originate form?

A

C3-C4

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9
Q

What are the superficial (sensory) branches of the cervical plexus?

A

lesser occipital
great auricular
transverse cervical
supraclavicular

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10
Q

What are the deep (mostly motor) branches of the cervical plexus?

A

Ansa cervicalix superior and inferior root
phrenic
segmental branches

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11
Q

What does the ansa cervicalis superior root innervate?

A

infrahyoid and geniohyoid muscles of the neck

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12
Q

Where does the ansa cervicalis superior root originate from?

A

C1

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13
Q

What does the ansa cervicalis inferior root innervate?

A

infrahyoid muscles of the neck

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14
Q

Where does the ansa cervicalis inferior root originate form?

A

C2-C3

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15
Q

What does the phrenic nerve innervate?

A

the diaphragm

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16
Q

Where does the phrenic nerve originate?

A

C3-C5

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17
Q

What do the segmental branches innervate?

A

the prevertebral (deep) muscles of the neck, the lev scap and middle scalene

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18
Q

Where do the segmental branches originate?

A

C1-C5.

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19
Q

What does the dorsal scapular innervate?

A

lev scap, rhomboid major & rhomboid minor muscle

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20
Q

Where does dorsal scapular originate from?

A

C5

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21
Q

What does the long thoracic innernate?

A

serratus anterior muscle

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22
Q

Where does the long thoracic originate?

A

C5-C7

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23
Q

Where does the nerve to subclavius originate?

A

C5-C6

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24
Q

What does suprascapular innervate?

A

supraspinatus and infraspinatus muscle

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25
Q

Where does the suprascapular nerve originate?

A

C5-C6

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26
Q

What does the musculocutaneous never innervate?

A

coracobrachialis, biceps brachii and brachialis muscles

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27
Q

Where does the musculocutaneous nerve originate?

A

C5-C7

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28
Q

What does the lateral pectoral muscle innervate?

A

pectoralis major and minor

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29
Q

Where does the lateral pectoral muscle originate?

A

C5-C7

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30
Q

What does the upper subscapular innervate?

A

subscapularis

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31
Q

Where does the upper subscapular originate?

A

C5-C6

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32
Q

What does the thoracodorsal nerve innervate?

A

latissimus dorsi

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33
Q

Where does the thoracodorsal nerve originate?

A

C6-C8

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34
Q

What does the lower subscapular innervate?

A

subscapularis & teres major

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35
Q

Where does the lower subscapular originate?

A

C5-C6

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36
Q

What does the axillary nerve innervate?

A

deltoid and teres minor muscles; skin over deltoid and superior posterior aspect of arm

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37
Q

Where does the axillary nerve originate?

A

C5-C6

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38
Q

What does the median nerve innervate?

A

all forearm flexors except flexor carpi ulnaris; half of flexor digitorum profundus and some muscles of hand (lateral palm); skin of lateral 2/3 of palm of hand and fingers.

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39
Q

Where does the median nerve originate?

A

C5-T1

40
Q

What does the radial nerve innervate?

A

triceps brachii, anconeus, and extensor muscles of forearm; skin of posterior arm and forearm, lateral 2/3 of dorsum of hand, and fingers over proximal and middle phalanges.

41
Q

Where does the radial nerve originate?

A

C5-T1

42
Q

What does the medial pectoral innervate?

A

pectoralis major and minor

43
Q

Where does the medial pectoral nerve originate?

A

C8-T1

44
Q

What does the medial cutaneous nerve of the arm innervate?

A

skin of medial and posterior aspect of distal 1/3 of arm

45
Q

Where does the medial cutaneous nerve of the arm originate?

A

C8-T1

46
Q

What does the medial cutaneous nerve of the forearm innervate?

A

skin of medial and posterior aspects of forearm

47
Q

Where does the medial cutaneous nerve of the forearm originate?

A

C8-T1

48
Q

What does the ulnar nerve innervate?

A

flexor carpi ulnaris, ulnar 1/2 of flexor digitorum profundus and most of hand; skin of medial side of hand, little finger and medial half of ring finger

49
Q

Where does the ulnar nerve originate?

A

C8-T1

50
Q

What the iliohypogastic nerve innervate?

A

muscles of anterolateral abdominal wall; skin of inferior abdomen and buttock

51
Q

Where does the iliohypogastic originate?

A

L1

52
Q

What does the ilioinguinal nerve innervate?

A

muscles of anterolateral abdominal wall; skin of superior and medial aspect of thigh, root of penis, and scrotum in men and the labia majora and the mons pubis in females.

53
Q

Where does the ilioinguinal nerve originate?

A

L1

54
Q

What does the Genitofemoral nerve innervate?

A

cremaster muscle; skin over middle anterior surface of thigh, scrotum in male and labia majora in females

55
Q

Where does the genitofemoral nerve originate?

A

L1-L2

56
Q

What does the lateral cutaneous nerve of thigh innervate?

A

skin over lateral, anterior and posterior aspects of thigh

57
Q

Where does the lateral cutaneous nerve of the thigh originate?

A

L2-L3

58
Q

What is the largest nerve arising from the lumbar plexus?

A

Femoral nerve

59
Q

What does the femoral nerve innervate?

A

distributed to flexor muscles of hip joint and extensor muscles of the knee joint, skin over anterior and medial aspect of thigh and medial side of leg and foot.

60
Q

Where does the femoral nerve originate?

A

L2-L4

61
Q

What does the obturator nerve innervate?

A

adductor muscles of hip joint; skin over medial of thigh

62
Q

Where does the obturator nerve originate?

A

L2-L4

63
Q

What does the superior gluteal nerve innervate?

A

glute min and med. and TFL

64
Q

Where does the superior gluteal originate?

A

L4-S1

65
Q

What does the inferior gluteal innervate?

A

glute max

66
Q

Where does the inferior gluteal originate?

A

L5-S2

67
Q

What does the nerve to piriformis innervate?

A

piriformis muscle

68
Q

Where does the nerve to piriformis originate?

A

S1-S2

69
Q

What does the nerve to quadratus femoris and inferior gemellus innervate?

A

Quadratus femoris and inferior gemellus muscles

70
Q

Where does the nerve to quadratus femoris and inferior gemellus

A

L4-S1

71
Q

What does the nerve to obturator interus and superior gemellus innervate?

A

obturator internus and superior gemellus muscles

72
Q

Where does the nerve to obturator internus and superior gemellus originate?

A

L5-S2

73
Q

What does the perforating cutaneous nerve innervate?

A

skin over inferior medial aspect of buttock

74
Q

Where does the perforating cutaneous nerve originate?

A

S2-S3

75
Q

What does the posterior cutaneous nerve of thigh innervate?

A

skin over anal region, inferior lateral aspect of buttock, superior posterior aspect of thigh, superior part of calf, scrotum in males and labia majora in females.

76
Q

What is the largest nerve in the body?

A

sciatic nerve

77
Q

What is the longest nerve in the body?

A

sciatic nerve

78
Q

What does the sciatic nerve innervate?

A

hamstrings and adductor magnus

79
Q

Which two nerves make up the sciatic nerve?

A

tibial and common fibular

80
Q

Where does the sciatic nerve split?

A

at the knee

81
Q

Where does the sciatic nerve originate?

A

L4-S3

82
Q

What does the tibial nerve innervate?

A

gastroc, plantaris, solues, popliteus, tibialis posterior, flexor digitorum longus and flexor hallucis longus muscles.
-branches of tibial nerve in the foot are the medial plantar and lateral plantar

83
Q

Where does the tibial nerve originate from?

A

L4-S3

84
Q

What does the medial plantar nerve innervate?

A
  • abductor hallucis, flexor digitorum brevis and flexor hallucis brevis
  • skin over medial 2/3 of plantar surface of foot.
85
Q

What does the lateral plantar nerve innervate?

A
  • remaining muscles of foot not supplied by medial plantar

- skin over lateral third of plantar surface of foot.

86
Q

Where does the medial plantar nerve originate?

A

it is a branch of the tibial nerve.

87
Q

Where does the lateral plantar nerve originate?

A

it is a branch of the tibial nerve.

88
Q

What does the common fibular nerve innervate?

A

-divides into superficial fibular and deep fibular branches

89
Q

Where does the common fibular nerve originate?

A

L4-S2

90
Q

What does the superficial fibular nerve innervate?

A
  • fibularis longus and brevis muslces

- skin over distal 1/3 of anterior aspect of leg and dorsum of foot.

91
Q

What does the deep fibular nerve innervate?

A
  • tibialis anterior, extensor hallucis longus, fibularis tertius and extensor digitorum longuse and extensor digitorum brevis muscles
  • skin on adjacent sides of first and second toes
92
Q

Where does the superficial fibular nerve originate?

A

it is a branch of the common fibular

93
Q

Where does the deep fibular nerve originate?

A

it is a branch of the common fibular

94
Q

What does the pudental nerve innervate?

A
  • muscles of the perineum
  • skin of penis and scrotum in males
  • clitoris, labia majora, labia minora and vagina in females
95
Q

Where does the pudental nerve originate?

A

S2-S4

96
Q

Which nerves are in the posterior division of the lumbar plexus?

A
  • lateral cutaneous nerve of the thigh
  • femoral nerve
  • lumbosacral trunk
97
Q

Which nerves are in the anterior division of the lumbar plexus?

A
  • iliohypgastric
  • ilioinguinal
  • genitofemoral
  • obturator

Neuro (13 decks)

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