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PNS > Sacral Plexus Quiz > Flashcards

Sacral Plexus Quiz Flashcards

1
Q

Sacral plexus is formed by what?

A

Anterior rami of L4-S3 part of 4

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2
Q

L4 and L5 are by way of?

A

Lumbosacral trunk

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3
Q

Sacral plexus is on surface of which muscle?

A

Piriformis

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4
Q

Which roots make up the nerve to the quadratus femurs and gemellus inferior?

A

L4, L5 and S1

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5
Q

Which roots make up the nerve to the obturator interns and gemellus superior?

A

L5, S1 and S2

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6
Q

The pudendal nerve is made up from fibers of which roots?

A

S2, S3 and S4

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7
Q

Which branches come off of the Pudendal nerve?

A

Inferior rectal nerves

Perineal nerve
Superficial
Deep

Dorsal nerve of penis (clit)

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8
Q

Inferior rectal nerves carry sensory info from?

Motor supply to?

A

Skin around the anus and inferior 2/3 of anal canal

External anal sphincter

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9
Q

The deep branches of the perineal nerve supply which 4 muscles?

A

External anal sphincter

Bulbosponsious

Ischicavernosus

Superficial transverse perineus

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10
Q

The terminal branch of the pudendal nerve is what?

Supplies what?

A

Dorsal nerve of the penis or clitoris

Deep transverse perineum

Urethral sphincter muscles

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11
Q

Individual muscular branches off the sacral plexus contain fibers from which root?

Supply which muscles?

A

S4

Levator Ani
Coccygeus

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12
Q

Pelvic splanchnic nerves contain fibers from which roots?

A

S2, S3 and S4

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13
Q

The nerve to the piriformis carries fibers from which roots?

A

S1 and S2

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14
Q

Superior gluteal nerve is made up of fibers from which roots?

Its superior branch supplies?

Inferior branch?

A

L4, L5 and S1

Gluteus medius and minimus

Gluteus medius, minimus, and TFL

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15
Q

The Inferior gluteal nerve carries fibers from which roots?

Supplies?

A

L5, S1 and S2

Gluteus maximus

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16
Q

The Perforating Cutaneous Nerve contains fibers from which roots?

A

S2 and S3

17
Q

The posterior cutaneous nerve of the thigh is formed by which roots?

A

Anterior S2 and S3

Posterior S1 and S2

18
Q

The sciatic nerve is combo of which nerves and their roots?

A

Tibial - anterior L4-S3

Common fibular - posterior L4-S2

19
Q

Common fibular nerve supplies which muscle in the thigh?

A

Biceps femoris (short head)

20
Q

Two sensory branches off of the common fibular nerve give off along lateral popliteal fossa. what are they?

A

Lateral sural cutaneous nerve

Fibular communicating branch

21
Q

What does the superficial fibular nerve supply?

It splits into which two things that supply skin over dorsal foot?

Deep fibular nerve?

A

Fibularis longus
Fibularis brevis

Medial and intermediate dorsal cutaneous nerves

Tibialis anterior
Extensor digitorum longus
Extensor digitiorum brevis
Extensor hallucis longus
Extensor hallucis brevis
Fibularis tertius
22
Q

Clinical consideration for the Common Fibular nerve?

A

Steppage gait

23
Q

The tibial nerve is made from which root fibers?

While still combined with CF nerve which muslces does it supply?

A

L4 - S3

Biceps femoris (long head)
Semitendinosus
Semimembranosus
Adductor magnus

24
Q

In the popliteal fossa the tibial nerve supplies which muscles?

A

Popliteus
Gastrocnemius
Soleus
Plantaris

25
Q

The popliteal branch of the tibial nerve gives rise to which nerve?

A

Interosseous nerve of the leg

26
Q

In the leg, the tibial nerve gives rise to muscular branches that supply?

Sensory branches that supply?

A

Flexor digitorum longus
Flexor hallucis longus

Medial calcaneal branches for skin over medial heel

27
Q

The tibial nerve travels around medial malleolus to plantar foot and divides into which two nerves?

A

Medial plantar nerve

Lateral plantar nerve

28
Q

What does the medial plantar nerve supply?

What does it divide into? that supplies lumbricals 1 and 2

Sensory supply to skin between toes from what nerve?

A

Abductor halluces
Flexor digitorum brevis
Flexor hallucis brevis

Common plantar digital nerves

Proper plantar digital nerves

29
Q

Latera plantar nerve divides into what two branches and what do they supply?

A

Superficial branch - skin around digit 5

Deep - adductor halluces
Flexor digiti minimi brevis
lateral lumbricals
interossei muscles

30
Q

Clinical considerations for Tibial nerve?

A

Flexor paralysis
Hammer toes
Claw foot

PNS (5 decks)

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