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CPPS 221 > lower limb muscles > Flashcards

lower limb muscles Flashcards

1
Q

gluteus maximus

A

O: iliac crest, posterior gluteal line, lateral surface of ilium, sacrum, coccyx and TL fascia

I: IT tract and gluteal tuberosity of femur

A: extension and lateral rotation of hip, superior fibers abduction

N: inferior gluteal nerve

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2
Q

Gluteus medius

A

O: anterior iliac crest, lateral surface of ilium between posterior and anterior gluteal lines

I: greater trochanter of femur

A: abduction and MR of hip

N: superior gluteal nerve

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3
Q

gluteus minimis

A

O: lateral surface of ilium between inferior and anterior gluteal lines

I: greater trochanter of femur

A: abduction and LR of hip

N: superior gluteal nerve

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4
Q

Tensor Fasciae Latae

A

O: Iliac crest and lateral surface of ASIS

I: Iliotibial tract

A: extension of knee and lateral rotation of leg throughout the IT tract (abduction and MR of thigh-femur)

N: superior gluteal nerve

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5
Q

Obturtators (internus, externus)

A

O: lateral and medial margins of obturator foramen

I: Trochantric fossa of femur (externus) medial surface of greater trochanter (internus)

A: lateral rotation and abduction of hip, maintain stability

N: obturator nerve (externus)
- special nerve from sacral plexus (internus)

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6
Q

Piriformis

A

O: anterolateral surface of sacrum

I: greater trochanter of femur

A: lateral rotation and abduction of hip, maintain stability

N: branches of sacral nerve (S1-S2)

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7
Q

Gemelli (superior and inferior)

A

O: ischial spine (superior) , ischial tuberosity (inferior)

I: medial surface of greater trochanter via tension of Obturator internus

A: lateral rotation and abduction of hip

N: nerves to obturator internus and quadrates femoris

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8
Q

Quadratus femoris

A

O: lateral border of ischial tuberosity

I: intertrochantric crest of femur

A: lateral rotation of hip (no abduction)

N: special nerve from the sacral plexus

*the only lateral rotator that does not abduct

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9
Q

Iliacus

A

O: iliac fossa

I: femur distal to lesser trochanter (tendon fused with psoas major)

A: flexion at hip- also helps to flex intervertebral joints (lumbar flexion)

N: femoral nerve

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10
Q

Psoas Major

A

O: anterior surfaces and TP of vertebrae T12-L5

I: lesser trochanter with iliacus

A: flexion at hip and lumbar flexion

N: branches of lumber plexus

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11
Q

Adductor Magnus

A

O: inferior ramus of pubis posterior to adductor brevis and ischial tuberosity

I: linea aspera and adductor tubercle of femur

A: adduction of hip (main function)
- anterior (flexion / MR) posterior (extension)

N: obturator and sciatic nerves

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12
Q

Adductor longus

A

O: inferior ramus of pubis anterior to adductor brevis

I: linea aspera of femur

A: adduction, flexion and MR of hip

N: obturator nerve

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13
Q

Adductor brevis

A

O: inferior ramus of pubis

I: linea aspera of femur

A: adduction and flexion of hip

N: obturator nerve

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14
Q

pectineus

A

O: superior ramus of pubis

I: pectineal line inferior to lesser trochanter of femur

A: flexion and adduction of hip

N: femoral nerve

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15
Q

Gracillis

A

O: inferior ramus of pubis

I: medial surface of tibia inferior to medial condyle (pes anserinus)

A: flexion and MR of knee, adduction and MR of hip

N: obturator nerve

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16
Q

rectus femoris

A

O: AIIS and superior acetabular rim of ilium

I: tibial tuberosity via quad tendon and patella via ligament

A: extension of knee, flexion of hip

N: femoral nerve

17
Q

vastus medialis

A

O: entire length of linea aspera

I: tibial tuberosity

A: knee extension

N: femoral nerve

18
Q

vastus intermedius

A

O: anterolateral surface of femur and linea aspera (distal surface)

I: tibial tuberosity

A: knee extension

N: femoral nerve

19
Q

vastus lateralis

A

O: anterior and inferior greater trochanter and proximal half of linea aspera

I: tibial tuberosity

A: knee extension

N: fermoral

20
Q

Sarotrius

A

O: ASIS

I: medial surface of tibia, pes anserinus

A: flexion at knee, abduction, flexion and lateral rotation at hip

N: femoral nerve

*cross legged muscles

21
Q

Biceps femoris

A

O: ischial tuberosity and short head linea aspera

I: head of fibula, lateral condyle of tibia

A: flexion at knee, extension and LR of hip

N: long head- sciatic
short head- common fibula nerve

22
Q

semimembranosus

A

O: ischial tuberosity

I: posterior surface of medial condyle of tibia

A: flexion at knee, extension and MR at hip

N: sciatic nerve

23
Q

semitendinosus

A

O: ischial tuberosity

I: proximal medial surface of tibia , pes anserinus

A: flexion at knee, extension and medial rotation of hip

N: sciatic nerve

24
Q

gastrocnemius

A

O: femoral condyles

I: calcaneus via calcanea tendon

A: PF at ankle (knee flexion)

N: tibial nerve

25
Q

plantaris

A

O: lateral supracondylar ridge

I: posterior portion of calcaneus

A: PF at ankle (knee flexion)

N: tibial nerve

26
Q

Soleus

A

O: head and proximal shaft of fibula, posteromedial shaft of tibia

I: calcaneus via calcaneal tendon

A: PF at ankle, postural support with standing

N: sciatic nerve- tibial

27
Q

popliteus

A

O: lateral condylar of femur

I: posterior surface of proximal tibial shaft

A: medial rotation of tibia (LR of femur) at knee and flexion of knee

N: tibial nerve

28
Q

Flexor digitorum longus

A

O: posteromedial surface of tibia

I: inferior surface of distal phalanges, toes 2-5

A: flexion of toes 2-5, plantar flexes ankle

N: tibial

28
Q

tibialis posterior

A

O: interosseous membrane and adjacent shafts of tibia and fibula

I: navicular, 3 cuneiforms, cuboid, 2-4th metatarsal

A: inversion of foot, PF at ankle

N: sciatic nerve, tibial nerve

29
Q

Flexor hallucis Longus

A

O: posterior surface of fibula

I: inferior surface, distal phalanx of great toe

A: flexion great toe, PF ankle

N: tibial

30
Q

Fibularis longus

A

O: head and proximal shaft of fibula

I: base of first metatarsal and medial cuneiform

A: eversion and PF of ankles, arch support

N: superficial fibular nerve

31
Q

Fibularis brevis

A

O: mid lateral margin of fibula

I: base of fifth metatarsal bone

A: eversion of foot and PF at ankle

N: superficial fibular nerve

32
Q

tibialis anterior

A

O: lateral condyle and proximal shaft of tibia

I: base of first metatarsal bone and medial cuneiform

A: DF at ankle, inversion of foot

N: deep fibular nerve

33
Q

extensor digitorum longus

A

O: lateral condyle of tibia, anterior surface of fibula

I: superior surface of phalanges, toes 2-5

A: extension of great toes, DF ankle

N: deep fibular nerve

34
Q

extensor hallucis longus

A

O: anterior surface of fibula

I: superior surface, distal phalanx of great toe

A: extension of great toe, DF ankle

N: deep fibular nerve

CPPS 221 (16 decks)

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