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Exam 5 Nerves Flashcards

1
Q

Gluteus maximus

A

Inferior gluteal n.

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2
Q

Gluteus medius

A

Superior gluteal n.

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3
Q

Gluteus minimus

A

Superior gluteal n.

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4
Q

Piriformis

A

S1, S2 (nerve of piriformis)

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5
Q

Obturator Internus

A

L5, S1, S2 (nerve of obterator internus)

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6
Q

Superior Gemellus

A

L5, S1, S2 (nerve of obterator internus

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7
Q

Inferior Gemellus

A

L5, S1 (nerve of quadratus femoris)

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8
Q

Quadratus Femoris

A

L5, S1 (nerve of quadratus femoris)

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9
Q

Sacral Plexus

A

Formed by Ventral Primary rami of Lumbosacral trunk (L4,L5), S1-S4
Exits pelvis through greater sciatic foramen under piriformis m.
Supply muscles & skin of gluteal region, posterior thigh, leg & foot
Splits into anterior (flexor muscles) & posterior (extensor muscles) divisions

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10
Q

Nerves of Anterior division of L4-S4

A

Tibial n. (Sciatic n. w/ common peroneal), N. to obturator internus, N. to quadratus femoris, pudendal n., N. to levator ani, & part of posterior femoral cutaneous

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11
Q

Nerves of Posterior division of L4-S4

A

Common peroneal n. (Sciatic n. w/ tibial), Superior gluteal, Inferior gluteal, part of posterior femoral cutaneous, N. to piriformis

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12
Q

Superior gluteal n.

A

L4-S1
Gluteus medius, gluteus minimus, tensor fasciae latae
Exits pelvis through greater sciatic foramen ABOVE piriformis muscle

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13
Q

Inferior gluteal n.

A

L5-S2

Gluteus maximus

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14
Q

Sciatic n.

A

L4-S3 - largest branch

2 nerves: Tibial (anterior division) & Common Peroneal (posterior division)

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15
Q

Posterior femoral cutaneous

A

S1-S3 - from sacral plexus
Skin of back of thigh & popliteal
Branches: Inferior clunial nn. - skin of upper posterior thigh (inferior gluteal region)
Perineal branches

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16
Q

Nerve to quadratus femoris

A

L5-S1

Quadratus femoris & inferior gemellus

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17
Q

Nerve to obturator internus

A

L5-S2

Obturator internus & superior gemellus

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18
Q

Nerve to piriformis

A

S1-S2

Piriformis

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19
Q

Pudendal nerve

A

S2-S4

Branches to inferior rectal n. & perineal n.

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20
Q

Skin of upper gluteal region

A 
Superior cluneal (L1-S3 posterior rami)
Medial cluneal (S1-S3 posterior rami)
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21
Q

Genital branches of genitofemoral & Ilioingunial

A

Genitofemoral: L1,2
Ilioinguinal L1
From superficial ring to supply skin of proximal medial thigh

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22
Q

Femoral branch of genitofemoral

A

L1,L2

Skin over femoral triangle (proximal part of anterior thigh)

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23
Q

Medial & Intermediate Cutaneous branches of femoral

A

L2-L4

Branches of femoral n. supply skin to medial & distal anterior thigh

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24
Q

Lateral femoral cutaneous

A

L2,L3
Enter thigh medial to ASIS
Supply skin of lateral thigh

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25
Q

Femoral N.

A

L2-L4
Anterior compartment of thigh (Sartorius, Quadriceps femoris, Iliopsoas, Articularis genu) & Pectineus
& Sensory to Anterior medial & intermediate cutaneous branch & Saphenous n.

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26
Q

Sartorius m.

A

Femoral N.

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27
Q

Rectus femoris

A

Femoral N.

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28
Q

Vastus lateralis

A

Femoral N.

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29
Q

Vastus medialis

A

Femoral n.

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30
Q

Vastus intermedius

A

Femoral n.

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31
Q

Articularis genu

A

Femoral n.

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32
Q

Iliopsoas

A

Femoral n.

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33
Q

Tensor fascia latae

A

Superior gluteal n.

34
Q

Saphenous n.

A

Branch of Femoral n.

Travels through adductor canal & leaves canal at lower end to innervate skin of medial leg & foot to 1st metatarsal

35
Q

Obturator n.

A

L2-L4
Medial compartment of thigh (Obturator externus, Pectineus, Adductor longus, Adductor brevis, Adductor magnus, Gracilis)
Anterior & posterior division on either side of adductor brevis m. (Anterior division between adductor longus & brevis, posterior division between adductor brevis & magnus)

36
Q

Pectineus m.

A

Femoral & Obturator n.

37
Q

Adductor longus

A

Obturator n. anterior branch

38
Q

Adductor brevis

A

Obturator n. anterior branch

39
Q

Adductor magnus

A

Obturator n. posterior branch (adductor part to linea aspera) & Tibial n. (hamstring part to adductor tubercle)

40
Q

Gracilis

A

Obturator n. anterior branch

41
Q

Obturator externus

A

Obturator n.

42
Q

Tibial n.

A

L4-S3 - Posterior thigh & leg muscles
From Sciatic n. - Posterior thigh compartment (Biceps femoris long head, Semitendinosus, Semimembranosus) & Adductor magnus (medial hamstring part)
From Tibial n. (after division) - Posterior leg ( Triceps surae, Plantaris, Popliteus, Tibialis posterior, Flexor digitorum longus, Flexor hallucis longus)
Branches: Medial sural cutaneous n., Lateral dorsal cutaneous n., Medial & lateral calcaneal branches, Medial plantar n. and Lateral plantar n.

43
Q

Biceps femoris

A

Long head - Tibial n.

Short head - Common peroneal n.

44
Q

Semitendinosus

45
Q

Semimembranosus

46
Q

Common peroneal n.

A

L4-S2
From Sciatic n. - Biceps femoris short head
Branches into Lateral sural cutaneous n., Superficial peroneal n. & Deep peroneal n. (Supply to anterior & lateral leg compartment muscles)

47
Q

Medial sural cutaneous n.

A

Branch of tibial n.
Skin at posterior leg
Becomes Sural n. after joining with communicating sural

48
Q

Lateral sural cutaneous n.

A

Branch of common peroneal n.

Skin of lateral leg

49
Q

Sural communicating n.

A

Branch of lateral sural cutaneous

Joins with medial sural cutaneous

50
Q

Sural n.

A

Formed by junction of medial sural & communicating sural cutaneous n.
Skin of posterior leg & continues into foot as lateral dorsal cutaneous n.

51
Q

Superficial peroneal n.

A

Branch of common peroneal - courses through lateral compartment
Skin of anterolateral leg & dorsum of foot - Medial & Intermediate dorsal cutaneous n.
Muscles of lateral leg compartment (Peroneus longus & Peroneus brevis)

52
Q

Deep peroneal n.

A

Branch of common peroneal
Anterior leg compartment (Tibialis anterior, Extensor hallucis longus, Extensor digitorum longus, Peroneus tertius) & enters foot - supply Extensor hallucis brevis & Extensor digitorum brevis
Sensory: skin between 1st & 2nd toes

53
Q

Tibialis Anterior

A

Deep peroneal n.

54
Q

Extensor Hallucis longus

A

Deep peroneal n.

55
Q

Extensor digitorum longus

A

Deep peroneal n.

56
Q

Peroneus Tertius

A

Deep peroneal n.

57
Q

Peroneus longus

A

Superficial peroneal n.

58
Q

Peroneus brevis

A

Superficial peroneal n.

59
Q

Gastrocnemius

60
Q

Soleus

61
Q

Plantaris

62
Q

Popliteus

63
Q

Flexor hallucis longus

64
Q

Flexor digitorum longus

65
Q

Tibialis posterior

66
Q

Lateral dorsal cutaneous n.

A

Continuation of sural nerve into foot

skin on lateral side

67
Q

Medial & intermediate dorsal cutaneous n.

A

Branches of superficial peroneal n.

Skin on middle dorsum of foot

68
Q

Extensor digitorum/hallucis brevis

A

Lateral branch of deep peroneal n.

69
Q

Calcaneal branches

A

From tibial n.

Supply skin of heel

70
Q

Medial plantar n.

A

Branch of tibial n. - larger than lateral plantar n.
Supplies skin to medial 3 1/2 digits (Divides into 3 common plantar digital n., Each gives rise to 2 proper plantar digital n.)
Muscles: Abductor hallucis, Flexor digitorum brevis, Flexor hallucis brevis, 1st lumbrical

71
Q

Lateral plantar n.

A

Branch of tibial n.
Supplies skin to lateral 1 1/2 digits (One common plantar digital n. - 2 proper plantar digital n. )
Motor to rest of intrinsic plantar muscles

72
Q

Abductor hallucis

A

Medial plantar n.

73
Q

Flexor digitorum brevis

A

Medial plantar n.

74
Q

Flexor hallucis brevis

A

Medial plantar n.

75
Q

1st lumbrical

A

Medial plantar n.

76
Q

Quadratus plantae

A

Lateral plantar n.

77
Q

Abductor digiti minimi

A

Lateral plantar n.

78
Q

Flexor digiti minimi brevis

A

Lateral plantar n.

79
Q

2nd-4th lumbricals

A

Lateral plantar n.

80
Q

Plantar & dorsal interossei

A

Lateral plantar n.

81
Q

Adductor hallucis

A

Lateral plantar n.

Anatomy (20 decks)

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