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Anatomy > O & I: Deep Muscles of Posterior Leg > Flashcards

O & I: Deep Muscles of Posterior Leg Flashcards

1
Q

Origin: Popliteus

A

lateral surface of lateral condyle of femur and lateral meniscus

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2
Q

Insertion: Popliteus

A

posterior surface of tibia and superior to soleal line

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3
Q

Innervation: Popliteus

A

tibial nerve (L4, L5, S1)

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4
Q

Action: Popliteus

A

flexes knee and medially rotates tibia

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5
Q

Function: Popliteus

A

unlocks screw home mechanism

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6
Q

Origin: Flexor Hallucis Longus

A

inferior two thirds of posterior surface of fibula; inferior part of interosseous membrane

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7
Q

Insertion: Flexor Hallucis Longus

A

base of distal phalanx of great toe (hallux)

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8
Q

Innervation: Flexor Hallucis Longus

A

Tibial Nerve (S2, S3)

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9
Q

Action: Flexor Hallucis Longus

A

flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot

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10
Q

Origin: Flexor Digitorum Longus

A

medial part of posterior surface of tibia inferior to soleal line; by a broad tendon to fibula

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11
Q

Insertion: Flexor Digitorum Longus

A

bases of distal phalanges of lateral four digits

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12
Q

Innervation: Flexor Digitorum Longus

A

Tibial Nerve (S2, S3)

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13
Q

Action: Flexor Digitorum Longus

A

flexes lateral four digits; plantarflexes ankle, supports longitudinal arches of foot

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14
Q

Origin: Tibialis Posterior

A

interosseous membrane; posterior surface of tibia inferior to soleal line; posterior surface of fibula

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15
Q

Insertion: Tibialis Posterior

A

tuberosity of navicular, cuneiform, cuboid, and sustentaculum tali of calcaneus; bases of 2nd, 3rd, and 4th metatarsals

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16
Q

Innervation: Tibialis Posterior

A

tibial nerve (L4, L5)

17
Q

Action: Tibialis Posterior

A

plantarflexes ankle; inverts foot

18
Q

Function: Tibialis Posterior

A

Stabilizes spring (plantar calcaneonavicular) ligament

Anatomy (25 decks)

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