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GA Lab N > Lab 8 Musculature > Flashcards

Lab 8 Musculature Flashcards

(69 cards)

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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
Insertion of gastrocnemius?
Calcaneus via tendo calcaneus
26
Action of gastrocnemius?
Plantarflexion of ankle Flexion of the knee
27
Nerve supply to gastrocnemius?
Tibial nerve
28
Blood supply to gastrocnemius?
Popliteal artery
29
Origin of soleus?
Soleal line of tibia Proximal 1/3 of fibula
30
Insertion of soleus?
Calcaneus via tendo calcaneus (same as gastrocnemius!!)
31
Action of soleus?
Plantarflexion of ankle
32
Nerve supply of soleus?
Tibial nerve
33
Blood supply of soleus?
Posterior tibial artery
34
Origin of plantaris? (NB: vestigial muscle)
Lateral supracondylar ridge of femur
35
Insertion of plantaris?
Posterior calcaneus
36
Action of plantaris?
Plantarflexion of ankle Flexion of knee
37
Nerve supply of plantaris?
Tibial nerve
38
Blood supply of plantaris?
Posterior tibial artery
39
Origin of popliteus?
Lateral condyle of femur
40
Insertion of popliteus?
Proximal posterior tibia
41
Action of popliteus?
Unlocks extended knee to initiate knee flexion by internal rotation of the tibia (normal) or external rotation of femur (reverse)
42
Nerve supply of popliteus?
Tibial nerve
43
Blood supply of popliteus?
Popliteal artery
44
Origin of tibialis posterior?
Posterior tibia (surprise surprise) Proximal posterior fibula Interosseous membrane
45
Insertion of tibialis posterior?
Navicular tuberosity and adjacent tarsals and metatarsals on plantar surface Sustentaculum tali of calcaneus
46
Action of tibialis posterior?
Inversion of foot Plantarflexion of ankle
47
Nerve supply of tibialis posterior?
Tibial nerve
48
Blood supply of tibialis posterior?
Posterior tibial artery
49
Origin of Flexor Digitorum Longus
Posterior tibia
50
Insertion of Flexor Digitorum Longus?
Bases of distal phalanges of toes 2-5
51
Action(s) of flexor digitorum longus?
Flexion of toes 2-5 at DIP joints Plantarflexion at ankle
52
Nerve supply of Flexor Digitorum Longus?
Tibial nerve
53
Blood supply of Flexor Digitorum Longus?
Posterior Tibial Artery
54
Origin of Flexor Hallucis Longus?
Distal posterior fibula Interosseus membrane
55
Insertion of Flexor Hallucis Longus?
Base of distal phalanx of great toe
56
Action of Flexor Hallucis Longus?
Flexion of great toe
57
Nerve supply of Flexor Hallucis Longus?
Tibial Nerve
58
Blood supply of Flexor Hallucis Longus?
Posterior tibial artery
59
Origin of peroneus longus?
Head and proximal 2/3rds of lateral shaft of fibula
60
Insertion of peroneus longus?
Base of first metatarsal Lateral side of medial cuneiform
61
Action of peroneus longus?
Eversion of foot Plantarflexion of ankle
62
Nerve supply to peroneus longus?
superficial peroneal nerve
63
Blood supply to peroneus longus?
Peroneal artery
64
Origin of peroneus brevis?
Distal 2/3rds of lateral shaft of fibula
65
Insertion of peroneus brevis?
Lateral surface of base of 5th metatarsal
66
Action of peroneus brevis?
Eversion of foot Plantarflexion of ankle
67
Nerve supply of peroneus brevis?
Superficial peroneal nerve
68
Blood supply of peroneus brevis?
Peroneal artery
69
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GA Lab N (2 decks)

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