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Gross Anatomy > Sacral Plexus > Flashcards

Sacral Plexus Flashcards

1
Q

Sacral plexus is over

A

Piriformis

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2
Q

Superior gluteal nerve

Segmental innervation

A

L4
L5
S1

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3
Q

Superior gluteal nerve exits via

A

Superior part of greater sciatic notch

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4
Q

Superior gluteal nerve

Motor supply

A

Gluteus medius and minimus, tensor Fascia Lata

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5
Q

Superior gluteal nerve

Division

A

Posterior

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6
Q

Inferior gluteal nerve

Segmental innervation

A

L5
S1
S2

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7
Q

Inferior gluteal nerve exits via

A

Inferior part of greater sciatic notch

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8
Q

Inferior gluteal nerve

Motor supply

A

Gluteus Maximus

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9
Q

Inferior gluteal nerve

Division

A

Posterior

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10
Q

Posterior femoral cutaneous nerve

Segmental innervation

A

S1
S2
S3

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11
Q

Posterior femoral cutaneous nerve

Cutaneous supply

A

Distal buttocks
Posterior thigh
Popliteal fossa

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12
Q

Posterior femoral cutaneous nerve

Divisions

A

Anterior and posterior

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13
Q

Pudendal Nerve

Segmental innervation

A

S2
S3
S4

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14
Q

Pudendal nerve

Division

A

Anterior

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15
Q

Pudendal nerve is main

A

Sensory nerve to external genitalia

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16
Q

S4 only contributes to

A

Pudendal nerve

17
Q

Sciatic nerve

Segmental innervation

A 
L4
L5
S1
S2
S3
18
Q

Sciatic nerve is

A

Largest nerve in body

19
Q

Sciatic nerve

Motor supply

A

Adductor Magnus
Semitendinosus
Semimembranosus
Biceps Femoris

20
Q

Branches of sciatic nerve

A

Tibial nerve

Common fibular nerve

21
Q

Tibial nerve

Division

A

Anterior

22
Q

Common fibular nerve

Division

A

Posterior

23
Q

Tibial nerve

Supplies

A

Muscles of posterior leg

Skin of posterior leg and plantar surface of foot

24
Q

Common fibular nerve

Branches

A

Superficial fibular nerve

Deep fibular nerve

25
Q

Superficial fibular nerve

Supplies

A

Muscles and skin of:

Lateral leg
Anterior leg
Dorsum of foot

26
Q

Deep fibular nerve

Supplies

A

Muscles and skin of:

Anterior leg
Lateral leg
Dorsum of foot

Gross Anatomy (18 decks)

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