Muscles O/I/A - Lower Extremity Flashcards

1
Q

Vastus Lateralis

AND

Vastus Medialis

A

O: Linea Aspera

I: Tibial Tuberosity via patella tendon

A: Knee Extension

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2
Q

Vastus Intermedius

A

O: Anterior Femur

I: Tibial Tuberosity via patella tendon

A: Knee Extension

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3
Q

Gastrocnemius

A

O: Medial and Lateral Condyles of Femur

I: Posterior Calcaneus

A: Knee Flexion, Ankle Plantar Flexion

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4
Q

Soleus

A

O: Posterior Tibia and Fibula

I: Posterior Calcaneus

A: Plantar Flexion of ankle

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5
Q

Tibialis Posterior

A

O: Interosseous membrane, adjacent Tibia and Fibula

I: Navicular and most tarsals and metatarsals

A: Ankle Inversion, assist Plantar Flexion

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6
Q

Peroneus Brevis

A

O: Lateral Distal Fibula

I: Base of 5th Metatarsal

A: Ankle Eversion, assist Plantar Flexion

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7
Q

Peroneus Longus

A

O: Lateral Proximal Fibula and interosseous membrane

I: Plantar surface of 1st Cuneiform and 1st Metatarsal

A: Anlke eversion, assist Plantar Flexion

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8
Q

Tibialis Anterior

A

O: Lateral Tibia, Interosseous membrane

I: 1st Cuneiform and 1st Metatarsal

A: Ankle Inversion and Dorsiflexion

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9
Q

Lumbricales (action only)

A

A: Flexes MP joints and extends PIP and DIP joints of toes 2-5

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10
Q

Flexor Hallucis Brevis (Action only)

A

A: Flexes MP joint of great toe

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11
Q

Extensor Digitorum Brevis (I & A only)

A

I: Middle phalanx of toes 2-4

A: Extends MP, PIP, nd DIP joints of toes 2-4

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12
Q

Extensor Digitorum Longus (I & A only)

A

I: Distal phalanx of 4 lesser toes

A: Extends 4 lesser toes, assist Dorsiflexion

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13
Q

Flexor Digitorum Longus (I & A only)

A

I: Distal phalanx of four lesser toes

A: Flexion of four lesser toes; assist inversion and plantar flexion

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14
Q

Flexor Digitorum Brevis (I & A only)

A

I: Middle phalanx of toes 2-5

A: Flexes MP and PIP joits of toes 2-5

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