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A&PL > Lower limb muscles > Flashcards

Lower limb muscles Flashcards

1
Q

iliacus (iliopsoas)

A

origin: iliac fossa and crest, lateral sacrum
Insertion: lesser trochanter of femur
action: flex trunk at hip joint, flex thigh

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2
Q

psoas major (iliopsoas)

A

origin: transverse processes, bodies, and discs of T12 and lumbar vertebrae
Insertion: lesser trochanter of femur
action: flex trunk at hip joint

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3
Q

sartorius

A

origin: anterior superior iliac spine
Insertion: aponeurosis into medial aspect of proximal tibia
action: flexes, abducts, and laterally rotates thigh

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4
Q

magnus (adductor)

A

origin: iscial and pubic rami and ishial tuberosity
Insertion: linea aspera and adductor tubercle of femur
action: adduct and medially rotate thigh

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5
Q

longus (adductor)

A

origin: pubis near pubic symphysis
Insertion: linea aspera
action: adduct and medially rotate thigh

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6
Q

brevis (adductor)

A

origin: body and interior pubic ramus
Insertion: linea aspera
action: adduct and medially rotate and flex thigh

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7
Q

gracilis

A

origin: inferior ramus and body of pubis
Insertion: medial surface of tibia inferior to medial condyle
action: adducts thigh

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8
Q

rectus femoris

A

origin: anterior inferior iliac spine and superior margin of acetabulum
Insertion: tibial tuberosity and patella
action: extends leg and flexes thigh

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9
Q

vastus lateralis

A

origin: greater trochanter, intertrochanteric line, linea aspera
Insertion: tibial tuberosity and patella
action: extends leg and stabilizes knee

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10
Q

vastus medialis

A

origin: linea aspera and intertrochanteric line
Insertion: tibial tuberosity and patella
action: extends leg, stabilizes patella

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11
Q

vastus intermedius

A

origin: anterior and lateral surface of femur
Insertion: tibial tuberosity and patella
action: extends leg

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12
Q

tensor fascia lata

A

origin: anterior iliac crest and anterior superior iliac spine
Insertion: iliotibial tract (lateral part of fascia lata)
action: steadies trunk

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13
Q

gluteus maximus

A

origin: dorsal ilium, sacrum, and coccyx
Insertion: gluteal tuberosity of femur and iliotibial tract
action: powerful thigh extensor

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14
Q

gluteus mediius

A

origin: upper lateral surface of ilium
Insertion: greater trochanter of femur
action: abducts and medially rotates thigh

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15
Q

gluteus minimus

A

origin: external inferior surface of ilium
Insertion: greater trochanter of femur
action: abducts and medially rotates thigh

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16
Q

biceps femoris

A

origin: ischial tuberosity (long), linea aspera and distal femur (short)
Insertion: tendon passes, head of fibula and lateral condyle of tibia
action: extends thigh

17
Q

semitendinosus

A

origin: ischial tuberosity
Insertion: medial aspect of upper tibial shaft
action: extends thigh

18
Q

semimembranosus

A

origin: ischial tuberosity
Insertion: medial condyle of tibia, lateral condyle of femur
action: extends thigh

19
Q

fibularis longus

A

origin: head and upper portion of fibula
Insertion: tendon under foot to metatarsal I and medial cuneiform
action: plantar flexes and everts foot

20
Q

fibularis brevis

A

origin: distal portion of fibula shaft
Insertion: tendon behind lateral malleolus to insert on proximal end of metatarsal V
action: plantar flexes and everts foot

21
Q

tibialis anterior

A

origin: lateral condyle, upper part of tibia, interosseous membrane
Insertion: tendon into inferior surface of first cuneiform and metatarsal I
action: prime mover of dorsiflexion

22
Q

extensor digitorus longus

A

origin: lateral condyle of tibia, proximal 3/4 of fibula, interosseous membrane
Insertion: tendon to middle and distal phalanges II-V
action: prime mover of toe extension

23
Q

fibularis tertius

A

origin: distal anterior surface of fibula and interosseous membrane
Insertion: tendon to dorsum of metatarsal V
action: dorsiflexes and everts foot

24
Q

extensor hallucis longus

A

origin: andteromedial shaft of fibula and interosseous membrane
Insertion: tendon to distal phalanx of great toe
action: extends great toe

25
Q

triceps surae

A

origin: n/a
Insertion: via common tendon into calcaneus
action: plantar flex foot

26
Q

gastrocnemius

A

origin: 2 heads from medial and lateral condyles of femur
Insertion: calcaneus via calcaneal tendon
action: plantar flexes foot

27
Q

soleus

A

origin: proximal portion of tibia and fibula, interosseous membrane
Insertion: calcaneus via calcaneal tendon
action: plantar flexion

28
Q

popliteus

A

origin: lateral condyle of femur and lateral meniscus
Insertion: proximal tibia
action: flexes and rotates leg medially

29
Q

tibialis posterior

A

origin: superior portion of tibia and fibula and interosseous membrane
Insertion: tendon behind medial malleolus and under arch of foot to metatarsals II-V
action: prime mover of foot inversion

30
Q

flexor digitorus longus

A

origin: posterior surface of tibia
Insertion: distal phalanges of toes II-V
action: flexes toes

31
Q

flexor hallucis longus

A

origin: middle portion of fibula shaft, interosseous membrane
Insertion: tendon under foot to distal phalanx of great toe
action: flexes great toe

32
Q

pectineus

A

origin: pectineal line or superior ramus of pubis
Insertion: posterior surface of femur
action: adducts, flexes, and medially rotates thigh

33
Q

piriformis

A

origin: anterior sacrum, gluteal surface of ilium
Insertion: greater trochanter of femur
action: laterally rotates thigh

34
Q

superior gemellus

A

origin: ischial spine
Insertion: medial surface of greater trochanter
action: laterally rotates thigh

35
Q

obturator internus

A

origin: inner surface of obturator membrane, bony boundaries of obturator foramen
Insertion: medial surface of greater trochanter of femur
action: laterally rotates thigh

36
Q

inferior gemellus

A

origin: ischial tuberosity
Insertion: medial surface of greater trochanter of femur
action: laterally rotates thigh

37
Q

quadratus femoris

A

origin: ischial tuberosity
Insertion: intertrochanteric crest of femur
action: laterally rotates thigh

A&PL (7 decks)

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