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ANAT 315 Term 2 > Lecture 8 - Muscles of Leg and Ankle > Flashcards

Lecture 8 - Muscles of Leg and Ankle Flashcards

1
Q

anterior carpartment of leg - muscles (4)

A
  1. tibialis anterior
  2. extensor hallicus longus
  3. extensor digitorum longus
  4. peroneus tertius
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2
Q

anterior carpartment of leg - action

A

dorsifelxion

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3
Q

anterior carpartment of leg - tibialis anterior: origin

A

upper 2/3 of the lateral surface of the tibia and interosseous membrane

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4
Q

anterior carpartment of leg - tibialis anterior: insertionmedial

A

medial cuneifrom and base of 1st metatarsal

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5
Q

anterior carpartment of leg - tibialis anterior: actions (2)

A

dorsiflexion and inversion

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6
Q

anterior carpartment of leg - extensor hallicus longus: origin

A

middle 1/3 of the medial surface of the fibula and interosseous membrane

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7
Q

anterior carpartment of leg - extensor hallicus longus: insertion

A

base of distal phalanx of the hallux

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8
Q

anterior carpartment of leg - extensor hallicus longus: actions (2)

A

dorsiflexion and extension of hallus

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9
Q

anterior carpartment of leg - extensor digitorum longus: origins (3)

A

lateral tibial condyle, head and medial surface of fibula, and interosseous membrane

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10
Q

anterior carpartment of leg - extensor digitorum longus: insertion

A

base of distal phalanx of digits 2-5

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11
Q

anterior carpartment of leg - extensor digitorum longus: actions (2)

A

dorsiflexion and extension of digits 2-5

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12
Q

anterior carpartment of leg - peroneus tertius: origin

A

anterior border fo distal fibula

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13
Q

anterior carpartment of leg - peroneus tertius:

A

base of the 5th metatarsal

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14
Q

anterior carpartment of leg - peroneus tertius: actions (2)

A

dorsiflexion and eversion

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15
Q

what is the extensor retinaculum?

A

the band of connective tissue covering the extensor tendons on the anterior surface of the leg and ankle

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16
Q

what muscles are in the lateral compartment of the leg? (2)

A
  1. peroneus longus
  2. peroneus brevis
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17
Q

what action does the lateral compartment of the leg mainly do?

A

eversion

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18
Q

lateral compartment of leg - peroneus longus: origin

A

head and proximal 2/3 of lateral surface of fibula

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19
Q

lateral compartment of leg - peroneus longus: insertion

A

medial cuneiform and base of 1st metatarsal

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20
Q

lateral compartment of leg - peroneus longus: actions (2)

A

plantarflexion and eversion

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21
Q

lateral compartment of leg - peroneus brevis: origin

A

distal 1/2 of lateral surface of fibula

22
Q

lateral compartment of leg - peroneus brevis: insertion

A

base of the 5th metatarsal

23
Q

lateral compartment of leg - peroneus brevis: actions (2)

A

plantarflexion and eversion

24
Q

what muscles comprimise the posterior compartment (superficial) of the leg? (3)

A
  1. gastrocnemius and soleus = triceps surae
  2. plantaris
25
Q

what action does the posterior compartment (superficial) of the leg mainly do?

A

plantarflexion

26
Q

posterior compartment (superficial) - gastrocnemis: origin

A

medial and lateral epicondyle of the femur

27
Q

posterior compartment (superficial) - gastrocnemis: insertion

A

calcaneal tuberosity via calcaneal tendon

28
Q

posterior compartment (superficial) - gastrocnemis: actions (2)

A

knee flexion and plantarflexion

29
Q

posterior compartment (superficial) - soleus: origins (2)

A

posterior surfa e of fibular head and neck, and soleal line of tibia

30
Q

posterior compartment (superficial) - soleus: insertion

A

calcaneal tuberosity via calcaneal tendon

31
Q

posterior compartment (superficial) - soleus: action

A

plantarflexion

32
Q

posterior compartment (superficial) - plantaris: origin

A

lateral epicondyle of the femur

33
Q

posterior compartment (superficial) - plantaris: insertion

A

calcaneal tuberosity via calcaneal tendon

34
Q

posterior compartment (superficial) - plantaris: actions (2)

A

knee flexion and plantarflexion

35
Q

what muscles comprimise the posterior compartment (deep) of the leg? (4)

A
  1. popliteus
  2. tibialis posterior
  3. flexor digitorum longus
  4. flexor hallicus longus
36
Q

what action does the posterior compartment (deep) of the leg mainly do? (2)

A

plantarflexion and inversion

37
Q

posterior compartment (deep) of the leg - popliteus: origin

A

lateral femoral condyle and lateral meniscus

38
Q

posterior compartment (deep) of the leg - popliteus: insertion

A

posterior tibial surface

39
Q

posterior compartment (deep) of the leg - popliteus: actions (2)

A

“unlocks” and stabilizes knee joint

40
Q

posterior compartment (deep) of the leg - tibialis posterior: origin

A

interosseur membrane and borders of tibia and fibula

41
Q

posterior compartment (deep) of the leg - tibialis posterior: insertions (3)

A

navicular, cuneiforms, and basse of 2-4th metatarsals

42
Q

posterior compartment (deep) of the leg - tibialis posterior: actions (2)

A

plantarflexion and inversion

43
Q

posterior compartment (deep) of the leg - flexor digitorum longus: origin

A

middle 1/3 of posterior surface of tibial

44
Q

posterior compartment (deep) of the leg - flexor digitorum longus: insertion

A

base of 2-5th distal phalanges

45
Q

posterior compartment (deep) of the leg - flexor digitorum longus: actions (3)

A

plantarflexion, inversion, and flexion of digits 2-5

46
Q

posterior compartment (deep) of the leg - flexor hallicus longus: origins (2)

A

distal 2.3 of posterior surface of fibu;a and interosseous memebrane

47
Q

posterior compartment (deep) of the leg - flexor hallicus longus: insertion

A

base of distal phalanx of hallux

48
Q

posterior compartment (deep) of the leg - flexor hallicus longus: actions (3)

A

plantarflexion, inversion, and flexion of hallux

49
Q

what is the flexor retinaculum?

A

band of connective tissue covering the flexor tendons on the medial surface of the ankle

50
Q

tarsal tunnel

A

located on the inside of the ankle, and is formed by the ankle bones and the band of ligaments that stretches across the foot

51
Q

what consists the tarsal tunnel? and memory aid

A

“Tom Dick And Very Nervous Harry”
- Tibialis posterior
- flexor Digitorum longus
- posterior tibial Artery & Vein
- tibial Nerve
- flexor Hallicus longus

ANAT 315 Term 2 (9 decks)

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