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N931 Advanced Principles of Anesthesia I > LE + Lumbar Plexus Anatomy > Flashcards

LE + Lumbar Plexus Anatomy Flashcards

1
Q

dorsal muscles in lower extremities

A
  • extend and abduct the hip
  • flex knee and toes
  • plantar flex the ankle
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2
Q

ventral muscles in lower extremities

A
  • flex the hip
  • extend the knee and toes
  • dorsiflex the ankle
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3
Q

three parts of the pelvis

A
  • ilium
  • ischium
  • pubis
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4
Q

elevators in lower extremity

A

DORSAL

  • hip extensors
  • abductors and flexors
  • knee and toe extensors
  • ankle dorsiflexors
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5
Q

depressors in lower extremitiy

A

VENTRAL

  • hip adductors and extensors
  • knee and toe flexors
  • ankle plantar flexors
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6
Q

posterior divisions of lumbosacral plexus

A

-go to ventral surface elevators

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7
Q

anterior divisions of lumbosacral plexus

A

-go to medial and dorsal surface depressors

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8
Q

what ventral rami contribute to lumbar plexus?

A

L1-L4

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9
Q

what ventral rami contribute to sacral plexus?

A

L4/L5-S4

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10
Q

what comes off ventral rami L1?

A
  • iliohypogastric

- ilioinguinal

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11
Q

what rami form the genitofemoral nerve?

A

L1 and L2; two branches of these rami come together to form the genitofemoral

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12
Q

What forms the femoral nerve?

A

posterior divisions of L2-L4

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13
Q

what does the femoral nerve innervate?

A

anterior thigh

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14
Q

what forms the obturator nerve?

A

anterior divisions of L2-L4

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15
Q

what does the obturator nerve innervate?

A

the medial thigh

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16
Q

what forms the common fibular (peroneal) nerve?

A

posterior divisions of L4-S2

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17
Q

what does the peroneal nerve innervate?

A

back of thigh, swings around to front of leg

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18
Q

what forms the tibial nerve?

A

the anterior divisions of L4-S4

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19
Q

what does the tibial nerve innervate?

A

continues down the back of the leg from the back of the thigh

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20
Q

what forms the sicatic nerve?

A

peroneal and tibial nerves

L4-S4 anterior and posterior divisions

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21
Q

what does the sicatic nerve innervate?

A

back of the thigh

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22
Q

function of iliopsoas nerve

A

hip flexion

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23
Q

function of femoral nerve

A

quads - hip flexion and knee extension

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24
Q

function of obturator nerve

A

adductors - hip adduction

25
Q

function of peroneal nerve

A

anterior leg MM - dorsiflexion and toe extension

26
Q

function of tibial nerve

A

posterior thigh and leg mm - hip extension, knee flexion, plantar flexion, and toe flexion

27
Q

what forms the lateral femoral cutaneous nerve?

A

L2 and L3

28
Q

what does the lateral femoral cutaneous nerve innervate?

A

the lateral aspect of the thigh

29
Q

what is the main branch of the femoral nerve?

A

saphenous nerve

30
Q

what does the saphenous nerve innervate?

A

the medial aspect of the leg and ankle

31
Q

what does the deep branch of the peroneal innervate?

A

anterior compartment of leg; in between two big toes

32
Q

what does the superficial branch of the peroneal innervate?

A

the lateral compartment of the leg

33
Q

muscles of the hip

A
  • gluteus maximums
  • gluteus medius
  • gluteus minimus
  • piriformis
  • quadratus femoris
34
Q

where does the sciatic nerve emerge?

A

emerges from under the piriformis

35
Q

quadriceps muscles

A
  • sartorius
  • vastus lateralis
  • rectus femoris
  • vastus medialis
36
Q

what innervates quadriceps muscles?

A

femoral nerve

37
Q

arteries of lower limb

A

aorta –> external iliac artery –> Profunda femoirs (deep artery of thigh) –> femoral artery –> popliteal artery –> anterior tibial –> dorsalis pedis

38
Q

hamstrings muscles

A

BITE ME Grandma

  • biceps femoris
  • semitendinosis
  • semimembrinosis
  • grasilis
39
Q

adductor muscles

A
  • adductor longus
  • adductor magnus
  • adductor brevis
  • pectineus
40
Q

what innervates adductor muscles?

A

obturator nerve

-includes pectineus that also gets innervation from the femoral nerve

41
Q

major extrinsic plantar flexors

A
  • gastrocnemius (medial and lateral head)
  • plantaris
  • soleus
42
Q

what innervates major extrinsic plantar flexors?

A

tibial nerve

43
Q

flexors and foot invertors

A
  • tibialis posterior
  • flexor digitorum longus
  • flexor hallucis longus
  • popliteus
44
Q

toe extensors and ankle dorsiflexors

A
  • extensor digitorum longus
  • extensor hallucis longus
  • peroneus tertius
  • tibialis anterior
45
Q

what innervates toe extensors and ankle dorsiflexors

A

peroneal nerve

46
Q

foot everters

A
  • peroneus longus
  • peroneus brevis
  • extensor hallucis longus
  • peroneus tertius
47
Q

superficial intrinsic foot muscles

A

-plantar aponeurosis helps to stabilize the arch of the foot

48
Q

short flexors and abductors of foot

A
  • flexor digitorum brevis
  • adductor digiti minimi
  • abductor hallucis
  • all originate from calcaneus
49
Q

intrinsic foot muscles deep layer

A

control big toe

-similar to thenar and hypothenar eminences of the hand

50
Q

goals of lower limb muscles

A
  • maintain stiff lower limb during walking
  • change limb angles to propel body forward and swing limb forward
  • sense and control limb angles
51
Q

gluteus maximus function during activity

A
  • extensor that keeps you upright
  • thigh/hip extension
  • prevents jack-knifing of trunk
52
Q

lesser gluteals (minimus and medius) function during activity

A
  • abductors that provide balance
  • thigh/hip abduction
  • function to balance the pelvis
53
Q

quadriceps (vasti) muscles function during activity

A
  • extensors that resist
  • extend knee
  • function is to prevent collapse of the knee
54
Q

hamstrings function during activity

A
  • keep you upright
  • extend hip and flex knee
  • function is to prevent jack-knifing of trunk
55
Q

iliopsoas function during activity

A
  • flex thigh (hip)

- initiate limb swinging

56
Q

adductors function during activity

A

kind of a mystery

adduct thigh

57
Q

ankle plantar flexors function during activity

A
  • power locomotion
  • plantarflex
  • drives toe-off and can store energy
58
Q

ankle dorsiflexors function during activity

A
  • clearing the floor and landing
  • dorsiflex
  • control foot position during swing and position foot for heel-strike
59
Q

nerves that travel around the lateral ankle to the plantar surface of the foot

A 
Tom Dick and never Harry
Tibialis posterior
flexor Digitorum longus
post tib Artery 
tibial Nerve
flexor Hallucis longus

N931 Advanced Principles of Anesthesia I (19 decks)

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