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Lower Extremity > Innervation/ Nerves > Flashcards

Innervation/ Nerves Flashcards

1
Q

Lumbar Plexus is

A

ventral rami of T12 L1-L4

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2
Q

Postganglionic Gray Rami communicates from:

A

sympathetic chain ganglia

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3
Q

they are conveyed to bodywall & lower limbs by way of :

A

ventral rami of the lumbar and sacral plexus

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4
Q

Subcostal N.

A

T12

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5
Q

Iliohypogastric N.

A

L1

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6
Q

Ilioinguinal N.

A

L1

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7
Q

Genitofemoral N.

A

L1, L2

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8
Q

Lateral Cutaneous N. of thigh

A

L2, L3

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9
Q

Nerve to Iliacus

A

L2, L3

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10
Q

Femoral N.

A

L2-L4

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11
Q

Obturator N.

A

L2-L4

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12
Q

Sacral Plexus is formed by:

A

the union of Lumbosacral Trunk L4, L5

and Ventral Rami S1-S4

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13
Q

Parasympathetic Pelvic splanichs originate from

A

S2-S4

they follow the path but doesn’t contribute

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14
Q

Superficial Hip Nerves

A

Superior Gluteal

Inferior Gluteal

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15
Q

Superior Gluteal

A

L4-L5
gluteus medius
gluteus minimus
TFL

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16
Q

Inferior Gluteal

A

L5-S2

gluteus maximus

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17
Q

Deep Hip Nerves

A 
Nerve to Piriformis
Nerve to Quadratus Femoris
Nerve to Obturator Internus
Sciatic N.
Posterior Femoral Cut. N.
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18
Q

Nerve to Piriformis

A

L4-S2

Piriformis

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19
Q

Nerve to Quadratus Femoris

A

L5-S1
Quadratus Femoris
Inferior gemellus

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20
Q

Nerve to Obturator Internus

A

L5-S1
Obturator Internus
superior gemellus

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21
Q

Sciatic Nerve

A

Tibial N. L4-S3

Common Fibular N. L4-S2

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22
Q

Posterior Femoral Cut. N.

A

S1-S3
Cutaneous Only
posterior thigh just inferior to popliteal fossa

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23
Q

the Post. Fem. Cut N. gives off:

A

Inferior Clunial nn. that gets the gluteal fold

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24
Q

Cutaneous Superior Clunial nn.

A

DORSAL RAMI L1-L3

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25
Q

Cutaneous Middle Clunial nn.

A

DORSAL RAMI S1-S3

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26
Q

cutaneous nerves come from:

A

ventral rami of the lumbar and sacral plexus

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27
Q

patellar tendon tap

A

L3-L4

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28
Q

calcaneal tendon tap

A

S1-S2

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29
Q

Innervation to the SI joint:

A

Dorsal Rami L5-S3

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30
Q

anterior hip jt capsule

A

femoral N L2-L4

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31
Q

medial hip capsule

A

obturator n L2-L4

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32
Q

posterior capsule

A

sacral plexus (L4-S4)

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33
Q

innervation to medial thigh

A

Obturator L2-L4

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34
Q

exception in medial thigh

A

pectineus and hamstring Ad Mag

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35
Q

pectinues gets:

A

femoral and obturator

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36
Q

hamstring Ad Mag gets:

A

Tibial portion of sciatic n.

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37
Q

Obturator runs along the medial margin of:

A

Psoas Major

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38
Q

branches around what muscle

A

Ad Brev

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39
Q

splits into two branches:

A

Anterior and Posterior branches

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40
Q

Anterior Branch of Obturator gets:

A

Ad Brev
Ad Long
Gracilis
Pectenus

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41
Q

Posterior Branch of Obturator gets:

A

Ad Brev
Obturator externus
Ad portion of Ad Mag

42
Q

Saphenous Nerve is:

and innervates what?

A

cutaneous branch of Femoral N.

anteromedial leg and infra patellar region

43
Q

terminal branch of Femoral N.

A

Nerve to Vastus Medialis

44
Q

All Hamstrings innervated by:

EXCEPT:

A

Tibial Portion of Sciatic N.

Short Head of Bicep Femoris

45
Q

Short Head of Bicep Femoris is innervated by:

A

Common Fibular N.

46
Q

Cord Contributions to

Lateral Cutaneous Nerve of Thigh

47
Q

Posterior Cutaneous Nerve of Thigh

48
Q

Tibial N. supplies these areas of

A

posterior leg and plantar foot

49
Q

Common Fib runs along what aspect of the posterior thigh and only supplies:

A

Lateral aspect

short head of the bicep femoris

50
Q

Com Fib supplies these areas

A

anterior and lateral compartments of the leg and dorsum of foot

51
Q

Posterior Leg gets what innervation

52
Q

Cutaneous innervation to posterior leg is from

A

Saphenous N

Sural N

53
Q

Saphenous N comes from

and supplies area:

A

Femoral N.

posteromedial

54
Q

Sural N comes from

and supplies area:

A

Tibial and Com Fib

posteriolateral

55
Q

Anterior compartment of the leg gets:

A

Deep Branch of Common Fibular N

56
Q

Lateral compartment of leg gets

A

Superficial Branch of Common Fibular N

57
Q

Common Fibular N runs along the:

and superficial to:

A

medial margin of Biceps Femoris Tendon

gastrocnemus

58
Q

Common Fibular N contributes a cutaneous branch to:

A

posterior leg

59
Q

Common Fib branches into 3 branches

A

Articular Branch
Deep Fib Branch
Superficial Fib Branch

60
Q

Articular Branch of Com Fib is and supplies

A

most superior and proximal tibiofibular joint

61
Q

Deep Branch of Com Fib does

A

Anterior Compartment
Dorsal Musculature
Cut to 1st dorsal Webspace

62
Q

Superficial Branch of Com Fib does

A

Lateral Compartment (Fib Long & Brev)

63
Q

Super Com Fib cutaneous innervation to:

A

lower anterolateral leg and entire dorsum of foot EXCEPT 1st webspace

64
Q

Tibial Nerve is ____ and ____ in the pop fossa

A

lateral and Superficial

65
Q

two ways Tibial N can be injured

A

in pop fossa or compressed in Tarsal Tunnel

66
Q

Deep Com Fib N can be injured during

A

compression with inflammation and swelling in Anterior Compartment of leg

67
Q

Superficial can be injured during

A

stretched from acute or chronic Inversion Ankle Sprain

68
Q

Common Fib N. damage can impact:

A

all muscle of Anterior and Lateral Compartments
Dorsiflexors
Foot Flat
Drop Foot

69
Q

Common Fib N. damage can cause weak:

and numbness to:

A

weak eversion

along anteriolateral leg & dorsum of foot

70
Q

Deep Fib N. damage ONLY

A

anterior compartment

numbness only in first webspace

71
Q

Superficial Fib N damage ONLY

A

lateral compartment
loss of eversion
numbness along anterolateral leg and dorsum of foot except 1st webspace

72
Q

ACL receives innervations from

A

branches of TIBIAL n.

73
Q

Plantar fascia is innervated by

A

medial and lateral branches of Tibial N.

74
Q

muscles innervated by Medial Plantar N

A

1st lumbercal
ABductor Hallucis
Flexor Digitorium Brevis
Flexor Hallucis Brevis

75
Q

muscles innervated by Lateral Plantar N.

A 
ADductor Hallucis
ABductor digiti minimi
Flexor digiti minmi
Quadrate Plantae
Interossei
2nd-4th lumbercals
76
Q

intrinsic dorsum foot muscles innervated by

A

Deep Fib N.

77
Q

Tibial N. enters the foot via

A

Tarsal tunnel

78
Q

as it passes onto the plantar foot it first gives off

A

medial calcaneal branches to supply the skin of the heel

79
Q

at the medial plantar calcaneus the tibial nerve then

A

splits between the 1st and 2nd layers of muscle

80
Q

it splits into

A

medial and lateral plantar nerves

81
Q

Medial Plantar Nerve cords

82
Q

Medial Plantar Nerve innervates

A

ABductor hallucis

flexor Digitorium brevis

83
Q

Medial Plant gives off

A

branches to the skin of the plantar foot

84
Q

Medial Plant also supplies a proper

A

plantar digital nerve to the medial side of the big toe

85
Q

a branch of the proper plantar digital nerve supplies

A

flexor hallucis brevis

86
Q

the Medial Plant divides into

A

three common plantar ditigial nerves

87
Q

the first common plantar digital nerve supplies

A

the 1st lumbercal

88
Q

Lateral Plantar N. cords

89
Q

Lateral Plant travels across

and emerges

A

the lateral plantar foot and emerges between the flexor digitorum and Quadratus plantae

90
Q

Lateral Plant nerve supplies

A

Quadratus Plantae

ABductor digiti minimi brevis

91
Q

Lateral Plant nerve then divides into

A

Superficial branch of Lateral Plant Nerve

Deep branch of Lateral Plant Nerve

92
Q

Superficial branch of Lat Plant N. supplies

A

Flexor Digiti minimi brevis

3rd plantar/4th dorsal interossei

93
Q

it also supplies cutaneous to

A

lateral plantar foot

94
Q

it then divides into

A

two digital branches

95
Q

these two digital branches are

A

a proper plantar digital nerve to the skin of lateral side of little toe
and common plantar digital nerves

96
Q

Deep branch of Lateral Plant nerve travels with

A

plantar arterial arch across plantar foot lateral to medial along bases of metatarsals

97
Q

Deep branch of lateral plant nerves sends muscular branches to

A

remaining interossei
lateral 3 lumbercals
and ADDuctor Hallicus

98
Q

nerve to the subtalar joint

A

branches of Deep Fibular N.

99
Q

cord contributions to Semitendinosus, Semimembranosus, Bicep Femoris

100
Q

cord contrib to Adductor Mangus Hamstring portion

Lower Extremity (7 decks)

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