Muscles: Leg, Foot Flashcards

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1
Q

Name the muscle, origin, and insertion

A

Gastrocnemius

Origin: Condyles of the femur, posterior surfaces

Insertion: Calcaneus via calcaneal tendon

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2
Q

Name the muscle and its actions

A

Gastrocnemius

Actions:

Flex the knee (TF jt)

Plantar flex the ankle (talocural jt)

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3
Q

Name the muscle, origin, and insertion

A

Soleus

Origin: Soleal line; proximal, posterior surface of tibia and posterior aspect of head of fibula

Insertion: Calcaneus via calcaneal tendon

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4
Q

Name the muscle and its actions

A

Soleus

Actions:

Plantar flex the ankle (talocural jt)

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5
Q

Name the muscle, origin, and insertion

A

Plantaris

Origin: Lateral supracondylar line of femur

Insertion: Calcaneus via calcaneal tendon

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6
Q

Name the muscle and its actions

A

Plantaris

Actions:

Weak plantar flexion of the ankle (talocural jt)

Weak flexion of the knee (TF jt)

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7
Q

Name the muscle, origin, and insertion

A

Popliteus

Origin: Lateral condyle of the femur

Insertion: Proximal, posterior aspect of tibia

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8
Q

Name the muscle and its actions

A

Popliteus

Actions:

Medially rotate the flexed knee (TF jt)

Flex the knee (TF jt)

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9
Q

Name the muscle in green, origin, and insertion

A

Peroneus Longus

Origin: Head of fibula and proximal 2/3rds of lateral fibula

Insertion: Base of the first metatarsal and medial cuneiform

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10
Q

Name the muscle in blue, origin, and insertion

A

Peroneus Brevis

Origin: Distal 2/3rds of lateral fibula

Insertion: Tuberosity of 5th metatarsal

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11
Q

Name the muscles and their actions

A

Peroneus Longus (green) and Brevis (blue)

Actions:

Evert the foot

Assist to plantar flex the ankle (talocural jt)

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12
Q

Name the muscle, origin, and insertion

A

Tibialis Anterior

Origin: Lateral condyle of tibia; proximal lateral surface of tibia and interosseous membrane

Insertion: Medial cuneiform and base of the 1st metatarsal

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13
Q

Name the muscle and its actions

A

Tibialis Anterior

Actions:

Invert the foot

Dorsiflex the ankle (talocural jt)

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14
Q

Name the muscle, origin, and insertion

A

Extensor hallucis longus

Origin: Middle anterior surface of fibula and interosseous membrane

Insertion: Distal phalanx of first toe

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15
Q

Name the muscle and its actions

A

Extensor Hallucis Longus

Actions:

Extend the first toe (metatarsophalangeal and interphalangeal jts)

Dorsiflex the ankle (talocural jt)

Invert the foot

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16
Q

Name the muscle, origin, and insertion

A

Extensor Digitorum Longus

Origin: Lateral condyle of tibia; proximal anterior shaft of fibula and interosseous membrane

Insertion: Middle and distal phalanges of 2nd through 5th toes

17
Q

Name the muscle and its actions

A

Extensor Digitorum Longus

Actions:

Extend the 2nd through 5th toes (metatarsophalangeal and interphalangeal)

Dorsiflex the ankle (talocural jt)

Evert the foot

18
Q

Name the muscle, origin, and insertion

A

Tibialis Posterior

Origin: Proximal posterior shafts of tibia and fibula; and interosseous membrane

Insertion: All five tarsal bones and bases of 2nd through 4th metatarsals

19
Q

Name the muscle and its actions

A

Tibialis Posterior

Actions:

Invert the foot

Plantar flex the ankle (talocrural jt)

20
Q

Name the muscle, origin, and insertion

A

Flexor Digitorum Longus

Origin: Middle posterior surface of tibia

Insertion: Distal phalanges of 2nd through 5th toes

21
Q

Name the muscle and its actions

A

Flexor Digitorum Longus

Actions:

Flex the 2nd through 5th toes (metatarsophalangeal and interphalangeal jt)

Weak plantar flexion of ankle (talocrural jt)

Invert the foot

22
Q

Name the muscle, origin, and insertion

A

Flexor Hallucis Longus

Origin: Middle half of posterior fibula

Insertion: Distal phalanx of 1st toe

23
Q

Name the muscle and its actions

A

Flexor Hallucis Longus

Actions:

Flex the first toe (metatarsophalangeal and interphalangeal jts)

Weak plantar flexion of ankle (talocrural jt)

Invert the foot

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25
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