Lower Limb Nerves Flashcards

1
Q

The lower extremity is innervated by spinal nerves originating from the ________ and ___________ Spine.

A

lumbar and sacral

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2
Q

Spinal nerves from L-spine form a nerve plexus entitled the _________ __________.

A

lumbar plexus

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3
Q

Spinal nerves from the Sacral Spine form a nerve plexus entitled the __________ ___________.

A

sacral plexus

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4
Q

Nerve Plexus is: A network of interweaving _________ __________ of spinal nerves.

A

anterior rami

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5
Q

A network of interweaving anterior rami of spinal nerves is called _____________ _______________.

A

nerve plexuses

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6
Q

________________ rami of most spinal nerves form nerve plexuses on both the right and left sides of the body.

A

Anterior

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7
Q

The anterior roots involve:

A

L4-S4

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8
Q

The posterior roots involve:

A

L1-L4

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9
Q

The lumbar nerve branches involve: (what is anterior and what is posterior)

A

obturator (anterior)
femoral (posterior)

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10
Q

The sacral nerve branches involve: (what is anterior and what is posterior)

A

tibial (anterior)
common fibular (posterior)

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11
Q

What three regions does the lumbar plexus innervate:

A
  1. upper hip
  2. groin
  3. anterior leg
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12
Q

What are the two parts of the femoral nerves:

A

1.) lateral femoral (patch by pocket on hip)
2.) saphenous (medial part of lower leg to toes)

DERMATOME ONLY

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13
Q

What is the name of the foramen that the obturator nerve goes through?

A

obturator foramen

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14
Q

The femoral nerve goes through the _____________________ and becomes the ______________ _______________.

A

adductor hiatus
popliteal artery

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15
Q

The femoral nerve is underneath the _______________________ ligament and next to the _________________ vein and artery.

A

inguinal
femoral

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16
Q

What three nerves involve the dermatome and myotome for the pelvis and hip?

A
  1. iliohypogastric nerve
  2. ilioinguinal nerve
  3. genitofemoral nerve
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17
Q

What nerve sits on the lateral part of the upper thigh?

A

lateral femoral cutaneous nerves

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18
Q

the femoral nerve is deep to the ___________ _____________

A

external iliac artery

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19
Q

What muscles are a part of the femoral nerve and are strong hip flexors?

A

psoas major
iliacus
Sartorius

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20
Q

What has the opening for the adductor hiatus?

A

adductor magnus

21
Q

What three muscles of the femoral nerve help with knee extension?

A

vastus lateralis
rectus femoris
vastus intermedius

22
Q

What is the femoral myotome?

A

hip flexion and knee extension

23
Q

What are the 4 hip adductors in the obturator nerve myotome?

A

adductor magnus
adductor brevis
adductor longus
gracilis

24
Q

What is the dermatome of the obturator nerve

A

medial thigh

25
Q

What regions do the sacral plexus innervate?

A

posterior hip and leg

26
Q

What is the major nerve of the sacral plexus? What are the 2 parts?

A

sciatic

common fibular and tibial

27
Q

What are the two parts of the common fibular nerve?

A

deep fibular
superficial fibular

28
Q

The common fibular and tibial travel together until they split and exit the ________________

A

sacral plexus

29
Q

The posterior leg is the ______________ and the anterior leg is the _________________________.

A

sacral plexus
lumbar plexus

30
Q

What two nerves of the sacral plexus deal with adduction and hip extension?

A

superior gluteal nerve and interior gluteal nerve

31
Q

What is a nerve sheath that hold the common fibular division and tibial division together (like a twix bar wrapping)

A

sciatic nerve

32
Q

the _______________ is anterior while the __________________ is posterior.

A

tibial
common fibular

33
Q

The sciatic/ischiadic nerev is half way between the:

A
  • PSIS and Ischial Tuberosity
    – Ischial tuberosity and Greater Trochanter
34
Q

What muscles of the tibial nerve involve the hamstrings and glutes (hip extension and knee flexion)?

A

biceps femoris longus head
semimembranosus
semitendinosus

35
Q

What two muscles of the tibial nerve help with calf flexion?

A

gastrocnemius
soleus

36
Q

What are the toe flexors of the tibial nerve?

A

flexor digitorum longus and flexor hallucis longus

37
Q

What are the plantar flexor muscles of the tibial nerve?

A

medial plantar nerve to plantar muscles
lateral plantar nerve to plantar muscles

38
Q

what are the myotomes and movement of the common fibular nerve?

A

dorsi flexion and extension of toes

39
Q

The deep fibular nerve has a big ____________________ and a small __________________.

A

myotome
dermatome

40
Q

What does the deep fibular nerve deal with (motions)?

A

dorsiflexion
extension

41
Q

The superficial fibular nerve has a big _____________________ and small ________________.

A

dermatomes
myotome

42
Q

What are three injuries of the sciatic nerve?

A

fat cat syndrome
piriformis syndrome
sciatic compression

43
Q

What causes sciatic compression (sciatica)?

A

large wallet
prolonged sitting
anatomical anomalies

44
Q

What are the injuries of the tibial nerve?

A

knee dislocations
baker’s cysts (benign cyst in popliteal of knee)

45
Q

Injuries to the tibial nerve create dysfunction of ___________ ___________.

A

plantar flexors

46
Q

the fibular nerve wraps around the ____________ head.

A

fibular

47
Q

What are the common injuries of fibular nerves?

A

ski boot syndrome
crossing legs
sitting lotus
foot drop

48
Q

What is another name for the ski boot syndrome?

A

deep fibular nerve entrapment

49
Q

if you have foot drop then….

A

can’t dorsi flex (flip up foot then quickly put it down)