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Gross Anatomy > Lumbar Plexus > Flashcards

Lumbar Plexus Flashcards

1
Q

Lumbar plexus embedded in

A

Psoas Major

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2
Q

Lumbosacral trunk

A

L4 and L5

Allows communication between lumbar and sacral plexus

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3
Q

Lumbar plexus

Segmental innervation

A 
T12
L1
L2
L3
L4
L5
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4
Q

Iliohypogastric Nerve

Segmental innervation

A

T12

L1

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5
Q

Iliohypogastric Nerve

Motor supply

A

Internal oblique

Transverse abdominis

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6
Q

Iliohypogastric Nerve

Cutaneous supply

A

Proximal Lateral buttocks

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7
Q

Ilioinguinal nerve

Segmental innervation

A

L1

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8
Q

Ilioinguinal Nerve

Cutaneous Supply

A

Proximal medial thigh

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9
Q

Genitofemoral Nerve

Segmental innervation

A

L1

L2

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10
Q

Genitofemoral Nerve pierces

A

Psoas major

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11
Q

Genitofemoral Nerve

Branches

A

Femoral

Genital

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12
Q

Genitofemoral Nerve

Motor supply

A

Cremaster (males only)

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13
Q

Genitofemoral Nerve

Cutaneous supply

A

Genitalia

Area below inguinal ligament

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14
Q

Lateral femoral cutaneous Nerve

Segmental innervation

A

L2

L3

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15
Q

Lateral femoral cutaneous Nerve passes under

A

Inguinal ligament, medial to ASIS

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16
Q

Lateral femoral cutaneous nerve

Cutaneous supply

A

Lateral aspect of thigh (anterior and posterior)

17
Q

Meralgia Paresthesia

A

Pain, burning, tingling along distribution of lateral femoral cutaneous nerve

18
Q

Femoral nerve is the

A

Largest branch

19
Q

Femoral nerve

Segmental innervation

20
Q

Femoral nerve

Motor supply

A

Iliacus, Psoas major, Sartorius, quadriceps, pectineus

21
Q

Femoral nerve

Cutaneous supply

A

Medial and intermediate aspect of anterior thigh

Medial aspect leg and foot

22
Q

Femoral nerve

Articular supply

A

Hip and knee

23
Q

Nerve of femoral N that accompanies femoral artery in adductor canal

A

Saphenous Nerve

24
Q

Obturator nerve

Segmental innervation

25
Q

Obturator nerve passes through membrane covering

A

Obturator foramen

26
Q

Obturator nerve

Motor supply

A

Pectineus, adductors (Magnus, longus, Brevis), gracilis, obturator Externus

27
Q

Obturator nerve

Cutaneous supply

A

Medial aspect of thigh

28
Q

Obturator nerve

Articular supply

A

Hip and knee

29
Q

Accessory Obturator nerve

Segmental innervation

30
Q

Accessory Obturator Nerve

Motor supply

31
Q

Accessory Obturator Nerve

Articular supply

32
Q

Accessory obturator nerve present in

A

20% population

33
Q

Nerves coming off posterior division

A

Femoral nerve

Lateral femoral cutaneous nerve

Gross Anatomy (18 decks)

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