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Muscles > Lower Body Muscles > Flashcards

Lower Body Muscles Flashcards

1
Q

Rectus femoris

A

Origin: Anterior inferior iliac spine and superior acetabular rim

Insertion: Tibial tuberosity

Action: Flexes thigh, extends knee

Prime Mover: Flexion of hip; extension at knee

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2
Q

Vastus intermedius

A

Origin: Anterolateral femur and linea aspera (distal)

Insertion: Tibial tuberosity

Action: Extends knee

Prime Mover: extension at knee

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3
Q

Vastus lateralis

A

Origin: Anterolateral femur and linea aspera (proximal)

Insertion: Tiibial tuberosity

Action: Extends knee

Prime Mover: extension at knee

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4
Q

Vastus medialis

A

Origin: Linea aspera

Insertion: Tibial tuberosity

Action: Extends knee

Prime Mover: extension at knee

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5
Q

Biceps femoris

A

Origin: Ischial tuberosity and linea aspera

Insertion: Head of fibula; lateral condyle of tibia

Action: Extends and laterally rotates thigh; flexes knee

Prime Mover: Extension at hip; flexion at knee; lateral rotation of knee

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6
Q

Semimembranosus

A

Origin: Ischial tuberosity

Insertion: Posterior, medial condyle of tibia

Action: Extends and medially rotates thigh; flexes knee

Prime Mover: Extension at hip; flexion at knee; medial rotation at knee

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7
Q

Semitendinosus

A

Origin: Ischial tuberosity

Insertion: Proximal, medial tibia

Action: Extends and medially rotates thigh; flexes knee

Prime Mover: Extension at hip; flexion at knee; medial rotation at knee

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8
Q

Sartorius

A

Origin: Anterior superior iliac spine

Insertion: Medial tibia

Action: Flexes and laterally rotates thigh; flexes knee

Prime Mover: medial rotation at knee

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9
Q

Popliteus

A

Origin: Lateral condyle of femur

Insertion: Posterior, proximal shaft of tibia

Action: Medially rotates tibia

Prime Mover:

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10
Q

Gluteus maximus

A

Origin: Iliac crest, saccrum, coccyx, and lumbrodorsal facia

Insertion: iliotibial tract and gluteal tuberosity of femur

Action: Extends and laterally rotates thigh

Prime Mover: Extension at hip, lateral rotation of hip

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11
Q

Gluteus medius

A

Origin: Anterior iliac crest, and lateral surface of ilium

Insertion: Greater trochanter of femur

Action: Abducts and medially rotates thigh

Prime Mover: Abduction of hip

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12
Q

Gluteus minimus

A

Origin: Lateral surface of ilium

Insertion: Greater trochanter of femur

Action: Abducts and medially rotates thigh

Prime Mover: Medial rotation of hip

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13
Q

Tensor fascia latae

A

Origin: Iliac crest and anterior superior iliac spine

Insertion: Iliotibial tract

Action: Flexes, abducts, and medially rotates thigh

Prime Mover: Medial rotation of hip

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14
Q

Adductor magnus

A

Origin: Inferior ramus of pubis

Insertion: Linea aspera of femur and adductor tubercle of femur

Action: Adducts thig; superior portion flexes and medially rotates thigh; Inferior portion extends and laterally rotates thigh

Prime Mover: Adduction of hip

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15
Q

Adducter brevis

A

Origin: Inferior ramus of pubis

Insertion: Linea aspera of femur

Action: Adducts, medially rotates, and flexes thigh

Prime Mover: Adduction of hip

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16
Q

Adductor longus

A

Origin: Inferior ramus of pubis

Insertion: Linea aspera of femur

Action: Adducts, medially rotates, and flexes thigh

Prime Mover: Adduction of hip

17
Q

Gracilis

A

Origin: Inferior ramus of pubis

Insertion: Medial tibia, inferior to medial condyle

Action: Adducts, medially rotates, and flexes thigh

Prime Mover: Adduction of hip

18
Q

Pectineus

A

Origin: Superior ramus of pubis

Insertion: Inferior to lesser trochanter of femur

Action: Adducts, medially rotates, and flexes thigh

Prime Mover: Adduction of hip

19
Q

Iliacus

A

Origin: Iliac fossa of ilium

Insertion: Femur, distal to lesser trochanter

Action: Flexes hip and/or lumbar spine

Prime Mover: Flexion of hip

20
Q

Psoas

A

Origin: Anterior surfaces and transverse processes of vertebrae T12- L5

Insertion: Lesser trochanter

Action: Flexes hip and/or lumbar spine

Prime Mover: Flexion of hip

21
Q

Tibialis anterior

A

Origin: lateral condyle and proximal shaft of tibia

Insertion: Base of metatarsal 1 and cuneiform 2

Action: Dorsiflexes and inverts foot

Prime Mover: dorsiflexion; Inversion/supination

22
Q

Gastrocnemius

A

Origin: Femoral condyles

Insertion: Calcaneous via calcaneal tendon

Action: Flexes knee; plantar flexes, inverts and adducts foot

Prime Mover: Plantarflexion

23
Q

Plantaris

A

Origin: Lateral supracondylar ridge of femur

Insertion: Posterior portion of calcaneous

Action: Flexes knee; plantar flexes foot

Prime Mover:

24
Q

Soleus

A

Origin: Head and proximal fibula, posteromedial tibia

Insertion: Calcaneous via calcaneal tendon

Action: Plantar flexes, inverts, and adducts foot

Prime Mover: Plantarflexion

25
Q

Tibialis posterior

A

Origin: Proximal tibia and fibula, interosseous membrane

Insertion: tarsals and metatarsal 2-4

Action: Plantar flexes, inverts, and adducts foot

Prime Mover: Inversion/supination

26
Q

Peroneus brevis

A

Origin: Midlateral margin of fibula

Insertion: Base of metatarsal 5

Action: Everts and plantar flexes foot

Prime Mover: Eversion/pronation

27
Q

Peroneus longus

A

Origin: Lateral condyle of tibia, head and proximal fibula

Insertion: Base of metatarsal 1 and cuneiform 2

Action: Everts and plantar flexes foot; supports longitudinal arch

Prime Mover: Eversion/pronation

28
Q

Peroneus tertius

A

Origin: Anterior distal fibula

Insertion: Base of metatarsal 5

Action: Everts and dorsiflexes foot

Prime Mover: dorsiflexion; Eversion/pronation

29
Q

Flexor digitorum longus

A

Origin: Posteromedial tibia

Insertion: Inferior surfaces of distal phalanges 2-5

Action: Planter flexes toes 2-5

Prime Mover: Flexion of toes

30
Q

Flexor hallicus longus

A

Origin: Posterior fibula

Insertion: Inferior surface, distal phalynx of great toe

Action: Plantar flexers great toe

Prime Mover: Flexion of toes

31
Q

Extensor digitorum longus

A

Origin: Lateral condyle of tibia, anterior fibula

Insertion: Superior surfaces of distal phalanges 2-5

Action: Extends toe 2-5

Prime Mover: dorsiflexion; Eversion/pronation; Extension of toes

32
Q

Extensor hallucis longus

A

Origin: Anterior fibula

Insertion: Superior surface, distal phalynx of great toe

Action: Extends great toe

Prime Mover: Extension of toes

Muscles (3 decks)

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