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Human Anatomy: Muscles > Muscles of the Leg > Flashcards

Muscles of the Leg Flashcards

1
Q

Popliteus

A

Origin:
Lateral condyle of femur

Insertion:
Proximal tibia

Actions:
Flexes knee
Medial rotation of tibia (to unlock extended knee)

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2
Q

Gastrocnemius

A

Origin:
Medial and lateral condyles of femur

Insertion:
Calcaneus via Calcaneal Tendon

Actions:
Plantar flexion
Knee flexion

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3
Q

Plantaris

A

Origin:
Just above lateral femoral condyle of femur (deep to gastrocnemis)

Insertion:
Calcaneus via Calcaneal Tendon

Action:
Plantar flexion
Knee flexion

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4
Q

Soleus

A

Origin:
Head of fibula and medial tibia

Insertion:
Calcaneus via Calcaneal Tendon

Action:
Plantar flexion

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5
Q

What are the deep posterior muscles of the leg?

A

Tibialis Posterior
Flexor Digitorum Longus
Flexor Hallucis Longus

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6
Q

Tibialis Posterior

A

Origins:
Tibia
Fibula
Interosseus membrane

Insertion:
Broad attachment on plantar surface of foot

Actions:
Ankle plantar flexion
Inversion of foot

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7
Q

Flexor Digitorum Longus

A

Origin:
Posterior surface of tibia

Insertion:
Distal phalanges of digits 2-5

Actions:
Ankle plantar flexion
Toe flexion (all joints)

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8
Q

Flexor Hallucis Longus

A

Origin:
Posterior inferior surface of fibula

Insertion:
Distal phalanx of big toe (hallux)

Actions:
Ankle plantar flexion
Flexion of big toe (hallux; all joints)

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9
Q

What are the anterior muscles of the leg?

A

Tibialis Anterior
Extensor Digitorum Longus
Extensor Hallicis Longus

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10
Q

Tibialis Anterior

A

Origins:
Lateral condyle of tibia
Tibia
Interosseous membrane

Insertions:
Metatarsal 1
Medial cuneiform

Actions:
Ankle dorsiflexion
Foot inversion

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11
Q

Extensor Digitorum Longus

A

Origins:
Lateral condyle of tibia
Fibula
Interosseous membrane

Insertion:
Middle and distal phalanges of digits 2-5

Actions:
Ankle dorsiflexion
Extension of toes

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12
Q

Extensor Hallucis Longus

A

Origins:
Anterior surface of fibula
Interosseous membrane

Insertion:
Distal phalanx of big toe (hallux)

Actions:
Ankle dorsiflexion
Extension of big toe

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13
Q

What are the lateral muscles of the leg?

A

Peroneus Longus
Peroneus Brevis
Peroneus Tertius

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14
Q

Peroneus Longus

A

Origin:
Head and body of fibula

Insertions:
Metatarsal 1
Medial cuneiform

Actions:
Ankle eversion
Plantar flexion

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15
Q

Peroneus Brevis

A

Origin:
Fibula

Insertion:
Base of fifth metatarsal

Actions:
Ankle eversion
Plantar flexion

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16
Q

Peroneus Tertius

A

Origins:
Distal surface of fibula
Interosseous membrane

Insertion:
Base of fifth metatarsal

Actions:
Ankle eversion
Dorsiflexion

Human Anatomy: Muscles (5 decks)

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