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Anatomy > Leg > Flashcards

Leg Flashcards

1
Q

tibialis anterior origin

A

lateral condyle and superior ½ of lateral surface of tibia and interosseous membrane

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2
Q

tibialis anterior insertion

A

medial and inferior surfaces of medial cuneiform and base of 1st metatarsal

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3
Q

tibialis anterior innervation

A

deep fibular (L4, L5)

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4
Q

tibialis anterior action

A

dorsiflexes ankle and inverts foot

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5
Q

extensor digitorum longus origin

A

lateral condyle of tibia and superior ¾ of medial surface of the tibia and interosseous membrane

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6
Q

extensor digitorum longus insertion

A

middle and distal phalanges of lateral 4 digits

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7
Q

extensor digitorum longus action

A

extends lateral 4 digits and dorsiflexes ankle

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8
Q

extensor hallucis longus origin

A

middle part of anterior surface of fibula and interosseous membrane

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9
Q

extensor hallucis longus insertion

A

dorsal aspect of base of distal phalanx of great toe

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10
Q

extensor hallucis longus innervation

A

deep fibular (L5, S1)

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11
Q

extensor digitorum longus innervation

A

deep fibular (L5, S1)

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12
Q

extensor hallucis longus action

A

extends great toe; dorsiflexes ankle

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13
Q

peroneus tertius origin

A

inferior ⅓ of anterior surface of fibula and interosseous membrane

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14
Q

peroneuus tertius insertion

A

dorsum of base of 5th metatarsal

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15
Q

peroneus tertius innervation

A

deep fibular (L5, S1)

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16
Q

peroneus tertius action

A

dorsiflexes ankle and aids in eversion of the foot

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17
Q

peroneus longus origin

A

head and superior two thirds of lateral surface of fibula

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18
Q

peroneus longus insertion

A

base of 1st metatarsal and medial cuneiform

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19
Q

peroneus longus innervation

A

superficial fibular nerve (L5, S1, S2)

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20
Q

peroneus longus action

A

everts foot and weakly plantarflexes ankle

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21
Q

peroneus brevis origin

A

inferior ⅔ of lateral surface of fibula

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22
Q

peroneus brevis insertion

A

dorsal surface of tuberosity on lateral side of base of 5th metatarsal

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23
Q

peroneus brevis innervation

A

superficial fibular (L5, S1, S2)

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24
Q

peroneus brevis action

A

everts foot and weakly plantarflexes ankle

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25
Q

gastrocnemius origin

A

lateral head: lateral aspect of lateral condyle of femur

medial head: popliteal surface of femur, superior to medial condyle

26
Q

gastrocnemius insertion

A

posterior surface of calcaneus via calcaneal tendon

27
Q

gastrocnemius innervation

A

tibial (S1, S2)

28
Q

gastrocnemius action

A

plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joint

29
Q

soleus origin

A

posterior aspect of head of fibula, superior ¼ of posterior surface of fibula soleal line and medial border of tibia

30
Q

soleus insertion

A

posterior surface of clacaneus vis cancaneal tendon

31
Q

soleus innervation

A

tibial (S1, S2)

32
Q

soleus action

A

plantarflexes ankle independent of knee position and steadies leg on foot

33
Q

plantaris origin

A

inferior end of lateral supracondylar line of femur and oblique popliteal ligament

34
Q

plantaris insertion

A

posterior surface of calcaneus via calcaneal tendon

35
Q

plantaris innervation

A

tibial (S1, S2)

36
Q

plantaris action

A

weakly assists gastrocnemius in plantarflexing ankle and flexing knee

37
Q

popliteus origin

A

lateral surface of lateral condyle of femur and lateral meniscus

38
Q

popliteus insertion

A

posterior surface of tibia, superior to soleal line

39
Q

popliteus innervation

A

tibial (L4, L5, S1)

40
Q

popliteus action

A

weakly flexes knee and unlocks it

41
Q

flexor hallucis longus origin

A

inferior ⅔ of posterior surface of fibula and inferior part of interosseus membrane

42
Q

flexor hallucis longus innervation

A

tibial (S2, S3)

43
Q

flexor hallucis longus acction

A

flexes great to at all joints’ weakly flexes ankle; supports medial longitudinal arches of the foot

44
Q

flexor digitorum longus origin

A

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

45
Q

flexor digitorum longus insertion

A

base of distal phalanges of lateral 4 digits

46
Q

flexor digitorum longus innervation

A

tibial (S2, S3)

47
Q

flexor digitorum longus action

A

flexes lateral 4 digits and plantarflexes ankle; supports longitudinal arches of foot

48
Q

tibialis posterior origin

A

interosseous membrane, posterior surface of tibia inferior to soleal line, and posterior surface of fibula

49
Q

tibialis posterior insertion

A

tuberosity of navicular, cuneiform, and cuboid, and bases of 2nd, 3rd, and 4th metatarsals

50
Q

tibialis posterior innervation

A

tibial (L4, L5)

51
Q

tibialis posterior action

A

plantarflexes ankle and inverts foot

52
Q

compartments of the leg

A

anterior
posterior
lateral
deep

53
Q

contents of anterior compartment

A 
deep fibular nerve
anterior artery and vein
tibialis anterior
extensor hallucis longus
extensor digitorum longus
54
Q

contents of lateral compartment

A

superficial fibular nerve
fibularis brevis
fibularis longus

55
Q

contents of posterior compartment

A

gastrocnemius

soleus

56
Q

contents of deep posterior compartment

A 
flexor hallucis longus
tibialis posterior
flexor digitorum longus
popliteus
fibular artery and vein
tibial nerve
posterior tibial artery and vein
57
Q

triceps surae

A

gastrocnemius and soleus

58
Q

compartment syndrome clinical presentation

A 
pain/swelling
paralysis
pallor
paresthesia
pulselessness
59
Q

a syndesmosis sprain involves sprain or rupture of the

A

anterior tibiofibular ligament
posterior tibiofibular ligament
interosseous membrane

60
Q

what is the purpose of the compartments in the lower leg?

A

venous return

Anatomy (16 decks)

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