Muscles Of The Leg Flashcards

0
Q

Insertion of tibialis anterior

A

By tendon into inferior surface of medial cuneiform and first metatarsal bone

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1
Q

Origin of tibialis anterior

A

Lateral condyle and upper two thirds of tibial shaft; interosseous membrane

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2
Q

Action of tibialis anterior

A

Prime mover in dorsiflexion

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3
Q

Innervation of tibialis anterior

A

Deep fibular nerve

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4
Q

Origin of extensor digitorum longus

A

Lateral condyle of tibia; proximal three-fourths of fibula; interosseous membrane

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5
Q

Insertion of extensor digitorum longus

A

Middle and distal phalanges of toes 2-5 via extensor expansion

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6
Q

Action of extensor digitorum longus

A

Prime mover of toe extension

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7
Q

Innervation of extensor digitorum longus

A

Deep fibular nerve

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8
Q

Origin of fibularis (peroneus) tertius

A

Distal anterior surface of fibula and interosseous membrane

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9
Q

Insertion of fibularis (peroneus) tertius

A

Tendon inserts on dorsum of fifth metatarsal

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10
Q

Action of fibularis (peroneus) tertius

A

Dorsiflexion and everts foot

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11
Q

Innervation of fibularis (peroneus) tertius

A

Deep fibular nerve

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12
Q

Origin of extensor hallucis longus

A

Anteromedial fibula shaft and interosseous membrane

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13
Q

Insertion of extensor hallucis longus

A

Tendon inserts on distal phalanx of great toe

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14
Q

Action of extensor hallucis longus

A

Extends great toe

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15
Q

Innervation of extensor hallucis longus

A

Deep fibular nerve

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16
Q

Origin of fibularis (peroneus) longus

A

Head and upper portion of lateral side of fibula

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17
Q

Insertion of fibularis (peroneus) longus

A

By long tendon that curves under foot to first metatarsal and medial cuneiform

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18
Q

Action of fibularis (peroneus) longus

A

Plantar flexes and everts foot

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19
Q

Innervation of fibularis (peroneus) longus

A

Superficial fibular nerve

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20
Q

Origin of fibularis (peroneus) brevis

A

Distal fibular shaft

21
Q

Insertion of fibularis (peroneus) brevis

A

By tendon running behind lateral malleolus to insert on proximal end of fifth metatarsal

22
Q

Action of fibularis (peroneus) brevis

A

Plantar flexes and everts foot

23
Q

Innervation of the fibularis (peroneus) brevis

A

Superficial fibular nerve

24
Q

Origin of gastrocnemius

A

By two heads from medial and lateral condyles of femur

25
Q

Insertion of gastrocnemius

A

Posterior calcaneus via calcaneal tendon

26
Q

Action of gastrocnemius

A

Plantar flexes foot

27
Q

Innervation of gastrocnemius

A

Tibial nerve

28
Q

Origin of soleus

A

Extensive cone shaped origin from superior tibia, fibula, and interosseous membrane

29
Q

Insertion of soleus

A

Posterior calcaneus via calcaneal tendon

30
Q

Action of soleus

A

Plantar flexes foot

31
Q

Innervation of soleus

A

Tibial nerve

32
Q

Origin of plantaris

A

Posterior femur above lateral condyle

33
Q

Insertion of plantaris

A

Via a long, thin tendon into calcaneus or calcaneal tendon

34
Q

Action of plantaris

A

Assists in knee Flexion and plantar Flexion of foot

35
Q

Innervation of plantaris

A

Tibial nerve

36
Q

Origin of popliteus

A

Lateral condyle of femur and lateral meniscus of knee

37
Q

Insertion of popliteus

A

Proximal tibia

38
Q

Action of popliteus

A

Flexes and rotates leg medially to unlock knee from full extension when Flexion begins

39
Q

Innervation of popliteus

A

Tibial nerve

40
Q

Origin of flexor digitorum longus

A

Extensive origin on the posterior tibia

41
Q

Insertion of flexor digitorum longus

A

Tendon runs behind medial malleolus and splits to insert into distal phalanges of toes 2-5

42
Q

Action of flexor digitorum longus

A

Plantar flexes and inverts foot; flexes toes

43
Q

Innervation of flexor digitorum longus

A

Tibial nerve

44
Q

Origin of flexor hallucis longus

A

Middle part of shaft of fibula; interosseous membrane

45
Q

Insertion of flexor hallucis longus

A

Tendon runs under foot to distal phalanx of great toe

46
Q

Action of flexor hallucis longus

A

Plantar flexes and inverts foot; flexes great toe at all joints

47
Q

Innervation of flexor hallucis longus

A

Tibial nerve

48
Q

Origin of tibialis posterior

A

Superior tibia and fibula and interosseous membrane

49
Q

Insertion of tibialis posterior

A

Tendon passes behind medial malleolus and under arch of foot; inserts into several tarsals and metatarsals 2-4

50
Q

Action of tibialis posterior

A

Prime mover of foot inversion

51
Q

Innervation of tibialis posterior

A

Tibial nerve