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Muscles > Lower Extremity Muscles > Flashcards

Lower Extremity Muscles Flashcards

1
Q

Superior Gemellus

A

O: ischial spine
I: medial surface of greater trochanter
N: nerve to obturator internus
A: lateral rotation of hip, abduction when flexed

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2
Q

Quadratas Femoris

A

O: prox surface of ischial tuberosity
I: quadrate tubercle
N: nerve to quadratas femoris
A: lateral rotation of hip

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3
Q

Gluteus Maximus

A

O: ilium, sacrum, coccyx, aponeurosis of erector spinae and glute medius, sacrotuberous ligament
I: gluteal tuberosity and IT tract
N: inferior gluteal nerve
A: hip extension, lateral hip rot, stabilizes knee
upper: abduct
lower: adduct

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4
Q

Gluteus Minimis

A

O: ilium b/t:anterior and inferior gluteal lines, margain of greater sciatic notch
I: anterior border of greater trochanter, hip joint capsule
N: superior gluteal nerve
A:hip abduction and medial rotation

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5
Q

Inferior Gemellus

A

O: prox part of ischial tuberosity
I: med surface of greater trochanter
N: nerve to quadratas femoris
A: lateral rotation of hip, abduction when hip flexed

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6
Q

Obturator Internus

A

O: ischiopubic ramus, margain of obturator foramen
I: med surface of greater trochanter
N:nerve to obturator internus
A: lateral rotation, abduction when hip is flexed

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7
Q

Piriformis

A

O: sacrum, ilium, SI joint, sacrotuberous ligament
I: superior border of greater trochanter
N: nerve to piriformis
A: lat rotation of hip joint, assists hip ext, abduction when hip is flexed

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8
Q

Gluteus Medius

A

O: ilium b/t anterior and posterior gluteal lines, gluteal aponeurosis
I: oblique ridge on lateral surface of greater trochanter
N: superior gluteal nerve
A: abducts hip
ant: med rot and hip flexion
post: lat rot and hip ext

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9
Q

Sartorius

A 
O: ASIS and notch below
I: pes anserine
N: femoral nerve 
A: hip: flexion, abduction, lateral rotation
  knee: flexion, medial rotation
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10
Q

Rectus Femoris

A

O: AIIS, acetabulum, hip joint capsule
I: base of patella
N: femoral
A: knee extension and hip flexion

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11
Q

Pectineus

A

O: pecten pubis
I: pectineal line of femur
N: femoral nerve
A: hip adduction, assist hip flexion

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12
Q

Tensor Fascia Lata (TFL)

A

O: iliac crest, and ASIS
I: IT band
N: superior gluteal nerve
A: hip flexion, medial rotation, abduction

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13
Q

Vastus Medialis

A

O: inertrochanteric line, medial lip of linea aspera
I: patella
N:femoral
A: knee extension

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14
Q

Vastus Intermedius

A

O: anterior, lateral, upper 2/3 of femur
I: patella
N: femoral
A: knee extension

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15
Q

Vastus Lateralis

A

O: gluteal tuberosity, intertrochanteric line, greater trochanter, lateral lip of linea aspera
I: patella
N:femoral
A: knee extension

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16
Q

Adductor Magnus (origin and insertion)

A

O: adductor: ischiopubic ramus
hamstring: ischial tuberosity
I: adductor: linea aspera, medial supracondylar ridge
hamstring: adductor tubercle

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17
Q

Adductor Magnus (innervation and action)

A

N: adductor: obturator
hamstring: sciatic
A: hip adduction, assist ext and flexion

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18
Q

Gracilis

A

O: inferior pubic ramus, ischial ramus
I: pes anserine
N: obturator nerve
A: hip adduction, knee flexion, medial rot of knee

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19
Q

Adductor Longus

A

O: pubis
I: middle 1/3 of med. lip linea aspera
N: obturator nerve
A: hip adduction, assists w/ flexion

20
Q

Adductor Brevis

A

O: inferior ramus and body of pubis
I: pectineal line of femur
N: obturator nerve
A: hip adduction, hip flexion

21
Q

Obturator Externus

A

O: ischiopubic ramus, margain of obturator foramen
I: trochanteric fossa of femur
N: obturator nerve
A: lat rotation of hip, assists w/ hip adduction

22
Q

Semitendinosus

A

O: ischial tuberosity
I: medial side of proximal tibial shaft
N: sciatic nerve- tibial division
A: knee flexion, medial rot, hip ext

23
Q

Biceps Femoris

A

O: long> ischial tuberosity, sacrotuberous ligament
short> lateral lip of linea aspera, lateral supracondylar
I: head of fibula, lateral tibial condyle
N: sciatic nerve- tibial nerve
A: knee flexion, lat rotation, hip extension

24
Q

Semimembranosus

A

O: ischial tuberosity
I: medial condyle of tibia
N: Sciatic nerve-tibial nerve
A: knee flexion, hip extension

25
Q

Flexor Digitorum Longus

A

O:shaft of tibia
I: distal phalanx 2-5
N: tibial n.
A: flexes MP, PIP, DIP digits 2-5

26
Q

Flexor Hallucis Longus

A

O: shaft of fibula
I: distal phalanx of big toe
N: tibial nerve
A: flexes IP of big toe

27
Q

Tibialis Posterior

A

O: tibia inferior to soleal line, shaft and head of fibula
I: navicular, cuboid, cuneiforms, MT 2-4
N: tibial
A: foot inversion

28
Q

Soleus

A

O: soleal line, shaft and head of fibula
I: calcaneus
N: tibial
A: plantar flexion

29
Q

Plantaris

A

O: lateral supracondylar line
I: calcaneus
N: tibial
A: assists plantar flexion and knee flexion

30
Q

Popliteus

A

O: lat condyle of femur, capsule of knee joint, lat meniscus, arcuate popliteal ligament
I: post. surface of tibia above soleal line
N: tibial
A: knee flexion nd med rotation

31
Q

Gastrocnemius

A

O: lat: lat femoral condyle, femur shaft, lat supracondylar line, knee joint capsule
med: med. femoral condyle and popliteal surface, knee joint capsule
I: calcaneus
N: tibial nerve
A: ankle planter flexion

32
Q

Tibialis Anterior

A

O: lateral tibial condyle and shaft
I: medial cuneiform and 1st MT
N: deep fibular nerve
A: ankle dorsiflexion, foot inversion

33
Q

Extensor Hallucis Longus

A

O: shaft of fibula
I: distal phalanx of great toe
N: deep fibular nerve
A: extension of MP and IP of great toe

34
Q

Extensor Digitorum Longus

A

O: lateral condyle of tibia, upper 3/4 of med. fibula
I: dorsum of toes 2-5
N: deep fibular nerve
A: MP extension of toes 2-5

35
Q

Fibularis Longus

A

O:head and upper fibula
I: medial cuneiform and 1st metatarsal
N: superficial fibular nerve
A: foot eversion

36
Q

Fibularis Brevis

A

O: distal 2/3 fibula
I: tuberosity of 5th metatarsal
N: superficial fibular nerve
A: foot eversion

37
Q

Fibularis Tertius

A

O: distal 1/3 of med fibula
I: dorsum of base of 5th metatarsal
N: deep fibular nerve
A: ankle dorsiflexion

38
Q

Plantar Interossei

A

O: unipennate> metatarsals 3-5
I: proximal phalanx of same toes
N: lateral plantar nerve
A: adduction of toes 3-5

39
Q

Dorsal Interossei

A 
O: bipennate> metatarsals bones
I: 1> proximal phalanx 2nd digit
   2-4> proximal phalanges of toes 2-4
*all insert into extensor digitorum
N:lateral plantar nerve
A: abduction of toes
40
Q

Abductor Hallucis

A

O:medial process of tuberosity of calcaneus
I:medial side of proximal phalanx of great toe
N: medial plantar nerve
A: abducts great toe

41
Q

Flexor Digitorum Brevis

A

O:medial process of tuberosity of calcaneus
I: both sides of middle phalanx of toes 2-5
N: medial plantar nerve
A: flexion of MP, PIP of toes 2-5

42
Q

Abductor Digiti Minimi

A

O:med and lat processes of tuberosity of calcaneus
I: lateral side of proximal phalanx of 5th toe
N: lateral plantar nerve
A: abduction and MP flexion of 5th toe

43
Q

Adductor Hallucis

A

O: obllique> metatarsals 2-4
transverse> plantar metatarsalphalangeal ligaments of toes 3-5 and deep transverse metatarsal ligaments
I: oblique> proximal phalanx of 1st digit, lateral sesamoid bone of hallux
transverse> lateral sesamoid of hallux
N: lateral plantar nerve
A: adduction of great toe

44
Q

Flexor Digiti Minimi Brevis

A

O:plantar surface of 5th metatarsal
I: proximal phalanx of toes
N: lateral plantar nerve
A: MP flexion of toes

45
Q

Flexor Hallucis Brevis

A 
O: lateral> plantar surface of cuboid, lateral cuneiform
    medial> tendon of tibialis posterior
I: proximal phalanx of big toe
N: medial plantar nerve 
A: MP flexion of great toe
46
Q

Quadratas Plantae

A

O:lateral> lateral border of plantar surface of calcaneus and long plantar ligament
medial> medial border of calcaneus and long plantar ligament
I:tendon of flexor digitorum longus
N: lateral plantar nerve
A: DIP flexion of toes 2-5

Muscles (4 decks)

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