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Anatomy > Lumbar and Sacral Plexus > Flashcards

Lumbar and Sacral Plexus Flashcards

1
Q

what are the nerves of the lumbar plexus?

A

femoral, obturator, lateral femoral cutaneous, genitofemoral

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2
Q

what are the roots of the lumbar plexus?

A

L1, L2, L3, L4

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3
Q

what is the femoral nerve responsible for?

A

cutaneous: thigh, leg foot
motor: anterior thigh muscles

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4
Q

what are the roots of the femoral nerve?

A

L2, L3, L4

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5
Q

what is the obturator nerve responsible for?

A

sensory: skin medial thigh, hip, knee joints
motor: adductor muscles

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6
Q

what are the roots of the obturator nerve?

A

L2, L3, L4

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7
Q

what is the lateral femoral cutaneous nerve responsible for?

A

sensory: skin lateral thigh

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8
Q

what are the roots of the lateral femoral cutaneous nerve?

A

L2, L3

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9
Q

what is the genitofemoral nerve responsible for?

A

sensory: skin scrotum, labia major, anterior thigh
motor: cremaster muscle

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10
Q

what are the nerves of the sacral plexus?

A 
sciatic
superior gluteal
inferior gluteal
posterior femoral cutaneous
pudendal
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11
Q

what are the roots of the sacral plexus?

A

L4, L5, S1, S2, S3, S4

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12
Q

what is the sciatic nerve responsible for?

A

motor: hamstring

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13
Q

what nerves does the sciatic nerve branch into?

A 
tibial nerve
common fibular (peroneal) nerve
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14
Q

what is the tibial nerve responsible for?

A

cutaneous: posterior leg and sole of foot
motor: posterior leg, foot

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15
Q

what are the roots of the tibial nerve?

A

L4-S1

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16
Q

what is the common fibular (peroneal) nerve responsible for?

A

cutaneous: anterior and lateral leg, dorsum of foot
motor: lateral compartment, tibialis anterior, toe extensors

17
Q

what are the roots of the common fibular nerve?

A

L4-S3

18
Q

what is the superior gluteal nerve responsible for?

A

motor: gluteus medius and minimus, tensor fasciae latae

19
Q

what are the roots of the superior gluteal nerve?

A

L4-S1

20
Q

what is the inferior gluteal nerve responsible for?

A

motor innervation of the gluteus maximus

21
Q

what are the roots of the inferior gluteal nerve?

A

L4-S1

22
Q

what is the posterior femoral cutaneus nerve responsible for?

A

sensory innervation of the inferior buttocks, posterior thigh, popliteal fossa

23
Q

what are the roots of the posterior femoral cutaneous nerve?

A

S1-S3

24
Q

what is the pudendal nerve responsible for?

A

sensory: external genitalia, anus
motor: muscles of perineum

25
Q

what are the roots of the pudendal nerve?

A

S2, 3, 4

Anatomy (16 decks)

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