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Undeleted > Appendicular Muscles - Lower Extremity > Flashcards

Appendicular Muscles - Lower Extremity Flashcards

Name Origin, Insertion, and Action

1
Q

Iliopsoas

A

O: Iliac Fossa, anterior and lateral surfaces of T12 - L5 I: Lesser Trochanter (Femur) A: Hip Flexion

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2
Q

Sartorious

A

O: Anterior Superior Iliac Spine (ASIS) I: Proximal medial aspect of Tibia (pes anserine) A: Combo: Hip Flexion, Abduction, External Rotation, Knee Flexion

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3
Q

Rectus Femoris

A

O: Anterior Inferior Iliac Spine (AIIS) I: Tibial Tuberosity A: Hip Flexion, Knee Extension

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4
Q

Pectineus

A

O: Superior Ramus of Pubis I: Pectineal Line (Femur) A: Hip Flexion & Adduction

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5
Q

Adductor Longus

A

O: Pubis I: Middle 1/3 of Linea Aspera (Femur) A: Hip Adduction

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6
Q

Adductor Brevis

A

O: Pubis I: Pectineal line and proximal Linea Apsera (Femur) A: Hip Adduction

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7
Q

Adductor Magnus

A

O: Ischium and Pubis I: Entire Linea Aspera and Adductor Tubercle (Femur) A: Hip Adduction

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8
Q

Gracilis

A

O: Pubis I: Anterior middle surface of proximal Tibia (Pes Anserine) A: Hip Adduction

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9
Q

Gluteus Maximus

A

O: Posterior Sacrum and Ilium I: Posterior Femur distal to Greater Trochanter and Iliotibial band (IT Band) A: Hip Extension, Hyperextension, External Rotation

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10
Q

Deep Rotators - Anterior - Obturator Externus - Posterior - Obturaror Internus - Quadrates Femoris - Piriformis - Gemellus Superior - Gemellus Inferior

A

O: Posterior sacrum, Ishium, & Pubis I: Greater Trochanter (Femur) A: Hip External Rotation

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11
Q

Semimembranosus

A

O: Ischial Tuberosity I: Posterior surface of medial Condyle of Tibia A: Extend Hip and Flex Knee

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12
Q

Semitendinosus

A

O: Ischial Tuberosity I: Anteromedial surface of proximal Tibia (Pes Anserine) A: Extend Hip and Flex Knee

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13
Q

Biceps Femoris

A

Long Head O: Ischial Tuberosity Short Head O: Linea Aspera I: Fibular Head Long Head A: Extend Hip, Flex Knee Short Head A: Flex Knee

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14
Q

Gluteus Medius

A

O: Outer surface of Ilium I: Greater Trochanter (lateral surface) A: Hip Abduction

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15
Q

Gluteus Minimus

A

O: Lateral Ilium I: Greater Trochanter (anterior surface) A: Hip Abduction, Internal Rotation

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16
Q

Tensor Fascia Latae

A

O: Anterior Superior Iliac Spine (ASIS) I: Lateral Condyle (Tibia) A: Combo: Hip Flexion and Abduction

17
Q

Vastus Lateralis AND Vastus Medialis

A

O: Linea Aspera I: Tibial Tuberosity via patella tendon A: Knee Extension

18
Q

Vastus Intermedius

A

O: Anterior Femur I: Tibial Tuberosity via patella tendon A: Knee Extension

19
Q

Popliteus

A

O: Lateral Condyle (Femur) I: Posterior surface of medial condyle (Tibia) A: Initiates Knee Flexion (“unlocks” knee)

20
Q

Gastrocnemius

A

O: Medial and Lateral Condyles (Femur) I: Posterior Calcaneus A: Knee Flexion, Ankle Plantar Flexion

21
Q

Soleus

A

O: Posterior Tibia and Fibula I: Posterior Calcaneus A: Plantar Flexion

22
Q

Plantaris

A

O: Posterior Lateral Condyle (Femur) I: Posterior Calcaneus A: Weak assist in Knee Flexion and Plantar Flexion

23
Q

Tibialis Posterior

A

O: Interosseous membrane, adjacent Tibia and Fibula I: Navicular and most tarsals and metatarsals II-IV A: Inversion, assist Plantar Flexion

24
Q

Flexor Hallucis Longus

A

O: Posterior Fibula and Interosseous membrane I: Distal Phalanx of Great Toe A: Flexes great toe, assist Inversion and Plantar Flexion

25
Q

Peroneus Tertius

A

O: Distal Medial Fibula I: Base of 5th Metatarsal A: assist Eversion and Dorsiflexion

26
Q

Peroneus Brevis

A

O: Distal Lateral Fibula I: Base of 5th Metatarsal A: Eversion, assist Plantar Flexion

27
Q

Peroneus Longus

A

O: Lateral Proximal Fibula and interosseous membrane I: Plantar surface of 1st Cuneiform and 1st Metatarsal A: Eversion, assist Plantar Flexion

28
Q

Extensor Digitorum Longus

A

O: Tibia, Fibula, Interosseous membrane I: Distal phalanx of 4 lesser toes A: Extends 4 lesser toes, assist Dorsiflexion

29
Q

Extensor Hallucis Longus

A

O: Fibula and interosseous membrane I: Distal phalanx of great toe A: Extends great toe, assist Inversion and Dorsiflexion

30
Q

Tibialis Anterior

A

O: Lateral Tibia, Interosseous membrane I: 1st Cuneiform and 1st Metatarsal A: Inversion and Dorsiflexion

31
Q

Flexor Digitorum Longus

A

O: Posterior Tibia I: Distal phalanx of four lesser toes A: Flexion of four lesser toes; assist inversion and plantar flexion

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