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Human Anatomy Myology > Lower Leg/Ankle Myology > Flashcards

Lower Leg/Ankle Myology Flashcards

1
Q

muscles in anterior compartment

A

tibialis anterior, extensor hallucis longus, extensor digitorum longus, extensor digitorum brevis, peroneus tertius

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2
Q

nerve to anterior compartment

A

deep peroneal nerve

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3
Q

tibialis anterior origin

A

lateral condyle, proximal 1/2 of lateral surface of tibia

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4
Q

tibialis anterior insertion

A

medial and planter surface of medial cuneiform and of base of 1st MT

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5
Q

tibialis anterior action

A

dorsiflexes and inverts ankle

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6
Q

extensor hallucis longus origin

A

middle 2 quarters of anterior surface of fibula

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7
Q

extensor hallucis longus insertion

A

base of distal phalanx of great toe

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8
Q

extensor hallucis longus action

A

extends the MTP and IP joints of great toe

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9
Q

extensor digitorum longus origin

A

lateral condyle of tibia, proximal 3/4 of anterior surface of body of fibula, interosseus membrane

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10
Q

extensor digitorum longus insertion

A

4 tendons to digits 2-5 attached to base of middle and distal phalanges

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11
Q

extensor digitorum longus action

A

extends MTP joints, assists extending IP joints of digits 2-5, dorsiflexes the ankle

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12
Q

extensor digitorum brevis origin

A

superolateral surface of calcaneus

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13
Q

extensor digitorum brevis insertion

A

4 tendons into proximal phalanx of great toe and long extensor tendons of 2, 3, and 4 digits

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14
Q

extensor digitorum brevis action

A

toe extension

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15
Q

peroneus tertius origin

A

distal 1/3 of anterior surface of fibula

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16
Q

peroneus tertius insertion

A

dorsal surface, base of 5th MT

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17
Q

peroneus tertius action

A

elevates the base of 5th MT, dorsiflexes, everts foot

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18
Q

muscles in superficial posterior compartment

A

gastrocnemius, soleus, plantaris

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19
Q

insertion for superficial posterior compartment

A

achilles tendon (posterior calcaneus)

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20
Q

nerve for superficial posterior compartment

A

tibial nerve

21
Q

gastrocnemius origin

A

posterior parts of medial and lateral femoral condyles

22
Q

gastrocnemius action

A

primary ankle plantarflexor, secondary knee flexor

23
Q

soleus origin

A

posterior surfaces of head of fibula and soleal line

24
Q

soleus action

A

plantarflexes ankle

25
Q

plantaris origin

A

distal end of lateral supracondylar line

26
Q

plantaris action

A

works with gastrocnemius to plantarflex, assists with knee flexion

27
Q

muscles in deep posterior compartment

A

tibialis posterior, popliteus, flexor digitorum longus, flexor hallucis longus

28
Q

nerve to muscles in deep posterior compartment

A

tibial nerve

29
Q

tibialis posterior origin

A

most of interosseus membrane, lateral portion of posterior surface of tibia, proximal 2/3 of medial surface of fibula

30
Q

tibialis posterior insertion

A

navicular tuberosity, cuneiforms, cuboid, bases of the 2-4 MT

31
Q

tibialis posterior action

A

plantarflexes, inverts ankle

32
Q

popliteus origin

A

anterior lateral surface of the condyle of the femur

33
Q

popliteus insertion

A

posterior surface of tibia near soleal line

34
Q

popliteus action

A

internal rotation of knee joint, unlocks extended knee, weak knee flexor

35
Q

flexor digitorum longus origin

A

middle 3/5 of posterior surface of body of tibia

36
Q

flexor digitorum longus insertion

A

bases of distal phalanges of digits 2-5

37
Q

flexor digitorum longus action

A

flexes proximal and distal IP and MTP joints of digits 2-5, assists with plantarflexion

38
Q

flexor hallucis longus origin

A

posterior surface of distal 2/3 of fibula and interosseus membrane

39
Q

flexor hallucis longus insertion

A

base of distal phalanx of great toe (plantar surface)

40
Q

flexor hallucis longus action

A

flexes the great toe

41
Q

muscles in lateral compartment

A

peroneus longus, peroneus brevis

42
Q

lateral compartment nerve

A

superficial peroneal

43
Q

peroneus longus origin

A

head and proximal 2/3 of lateral surface of fibula

44
Q

peroneus longus insertion

A

lateral side of base of 1st MT and medial cuneiform

45
Q

peroneus longus action

A

everts foot, assists in plantarflexion, depresses 1st MT

46
Q

peroneus brevis origin

A

distal 2/3 of the lateral surface of fibula

47
Q

peroneus brevis insertion

A

tuberosity of the 5th MT

48
Q

peroneus brevis action

A

everts foot, assists in plantarflexion

Human Anatomy Myology (5 decks)

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