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GA Lab N > Lab 8 Musculature > Flashcards

Lab 8 Musculature Flashcards

1
Q

Name the muscles found in the anterior compartment of leg. Hint: There are 4 :)

A

Tibialis anterior Extensor hallucis longus Extensor digitorum longus Peroneus tertius

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2
Q

What is the Nerve/Blood supply to the anterior compartment?

A

Deep peroneal nerve and Anterior tibial artery

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3
Q

Origin of tibialis anterior?

A

Lateral condyle and proximal lateral shaft of tibia Interosseous membrane

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4
Q

Insertion of tibialis anterior?

A

Plantar surface of base of 1st metatarsal Inferomedial surface of medial cuneiform

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5
Q

Actions of tibialis anterior?

A

Dorsiflexion of ankle Inversion of foot

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6
Q

Nerve supply to tibialis anterior?

A

Deep peroneal nerve

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7
Q

Blood supply to tibialis anterior?

A

Anterior tibial artery

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8
Q

Origin of extensor hallucis longus?

A

Anterior shaft of fibula Interosseous membrane

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9
Q

Insertion of extensor hallucis longus?

A

Base of distal phalanx of the great toe

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10
Q

Action of extensor hallucis longus?

A

Extension of great toe

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11
Q

Nerve supply to extensor hallucis longus?

A

Still the deep peroneal nerve

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12
Q

Blood supply to extensor hallucis longus?

A

Also still the anterior tibial artery

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13
Q

Origin of extensor digitorum longus?

A

Proximal 2/3rds of anterior shaft of fibula Lateral condyle of tibia Interosseous membrane

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14
Q

Insertion of extensor digitorum longus?

A

Extensor expansion of toes 2-5

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15
Q

Actions of extensor digitorum longus?

A

Extension of toes 2-5 Dorsiflexion of ankle

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16
Q

Nerve supply to extensor digitorum longus?

A

DEEP peroneal nerve

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17
Q

Blood supply to extensor digitorum longus?

A

Anterior tibial artery

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18
Q

Origin of peroneus tertius?

A

Distal 1/3 of anterior fibula

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19
Q

Insertion of peroneus tertius?

A

Base of 5th metatarsal

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20
Q

Action of peroneus tertius?

A

Eversion of foot Dorsiflexion of ankle

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21
Q

Nerve supply to peroneus tertius?

A

Deep peroneal nerve

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22
Q

Blood supply to peroneus tertius?

A

Anterior tibial artery!

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23
Q

Name muscles that are part of the superficial compartment of the posterior leg.

A

Gastrocnemius Soleus Plantaris

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24
Q

Origin of gastrocnemius?

A

Medial head: Medial epicondyle of femur Lateral head: Lateral epicondyle of femur

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25
Q

Insertion of gastrocnemius?

A

Calcaneus via tendo calcaneus

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26
Q

Action of gastrocnemius?

A

Plantarflexion of ankle Flexion of the knee

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27
Q

Nerve supply to gastrocnemius?

A

Tibial nerve

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28
Q

Blood supply to gastrocnemius?

A

Popliteal artery

29
Q

Origin of soleus?

A

Soleal line of tibia Proximal 1/3 of fibula

30
Q

Insertion of soleus?

A

Calcaneus via tendo calcaneus (same as gastrocnemius!!)

31
Q

Action of soleus?

A

Plantarflexion of ankle

32
Q

Nerve supply of soleus?

A

Tibial nerve

33
Q

Blood supply of soleus?

A

Posterior tibial artery

34
Q

Origin of plantaris? (NB: vestigial muscle)

A

Lateral supracondylar ridge of femur

35
Q

Insertion of plantaris?

A

Posterior calcaneus

36
Q

Action of plantaris?

A

Plantarflexion of ankle Flexion of knee

37
Q

Nerve supply of plantaris?

A

Tibial nerve

38
Q

Blood supply of plantaris?

A

Posterior tibial artery

39
Q

Origin of popliteus?

A

Lateral condyle of femur

40
Q

Insertion of popliteus?

A

Proximal posterior tibia

41
Q

Action of popliteus?

A

Unlocks extended knee to initiate knee flexion by internal rotation of the tibia (normal) or external rotation of femur (reverse)

42
Q

Nerve supply of popliteus?

A

Tibial nerve

43
Q

Blood supply of popliteus?

A

Popliteal artery

44
Q

Origin of tibialis posterior?

A

Posterior tibia (surprise surprise) Proximal posterior fibula Interosseous membrane

45
Q

Insertion of tibialis posterior?

A

Navicular tuberosity and adjacent tarsals and metatarsals on plantar surface Sustentaculum tali of calcaneus

46
Q

Action of tibialis posterior?

A

Inversion of foot Plantarflexion of ankle

47
Q

Nerve supply of tibialis posterior?

A

Tibial nerve

48
Q

Blood supply of tibialis posterior?

A

Posterior tibial artery

49
Q

Origin of Flexor Digitorum Longus

A

Posterior tibia

50
Q

Insertion of Flexor Digitorum Longus?

A

Bases of distal phalanges of toes 2-5

51
Q

Action(s) of flexor digitorum longus?

A

Flexion of toes 2-5 at DIP joints

Plantarflexion at ankle

52
Q

Nerve supply of Flexor Digitorum Longus?

A

Tibial nerve

53
Q

Blood supply of Flexor Digitorum Longus?

A

Posterior Tibial Artery

54
Q

Origin of Flexor Hallucis Longus?

A

Distal posterior fibula

Interosseus membrane

55
Q

Insertion of Flexor Hallucis Longus?

A

Base of distal phalanx of great toe

56
Q

Action of Flexor Hallucis Longus?

A

Flexion of great toe

57
Q

Nerve supply of Flexor Hallucis Longus?

A

Tibial Nerve

58
Q

Blood supply of Flexor Hallucis Longus?

A

Posterior tibial artery

59
Q

Origin of peroneus longus?

A

Head and proximal 2/3rds of lateral shaft of fibula

60
Q

Insertion of peroneus longus?

A

Base of first metatarsal

Lateral side of medial cuneiform

61
Q

Action of peroneus longus?

A

Eversion of foot

Plantarflexion of ankle

62
Q

Nerve supply to peroneus longus?

A

superficial peroneal nerve

63
Q

Blood supply to peroneus longus?

A

Peroneal artery

64
Q

Origin of peroneus brevis?

A

Distal 2/3rds of lateral shaft of fibula

65
Q

Insertion of peroneus brevis?

A

Lateral surface of base of 5th metatarsal

66
Q

Action of peroneus brevis?

A

Eversion of foot

Plantarflexion of ankle

67
Q

Nerve supply of peroneus brevis?

A

Superficial peroneal nerve

68
Q

Blood supply of peroneus brevis?

A

Peroneal artery

69
Q

CONGRATULATIONS!!!

A

WE DID IT! *cue Dora the Explorer theme song*

GA Lab N (2 decks)

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