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Musculo-Skeletal > Muscles of Posterior Compartment of Leg > Flashcards

Muscles of Posterior Compartment of Leg Flashcards

0
Q

Main action of the gastrocnemius?

A
  • Plantar flexes ankle

- Flexes leg at knee

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1
Q

Name the superficial muscles of posterior compartment of the leg?

A
  1. Gastrocnemius
  2. Soleus
  3. Plantaris
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2
Q

Main action of the soleus?

A
  • Plantar flexes ankle

- Steadies leg on foot

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3
Q

Main action of the plantaris?

A

Assists gastrocnemius in plantar flexion & flexion of leg at knee

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4
Q

Innervation of superficial muscles of posterior compartment of leg?

A

Tibial n.

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5
Q

Proximal attachment of the gastrocnemius?

A
  1. Lat. head:
    - Lat. condyle of femur
  2. Med. head:
    - Popliteal surface of femur
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6
Q

Distal attachment of the gastrocnemius?

A

Post. surface of calcaneus

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7
Q

Proximal attachment of the soleus?

A

Post. aspect of head of fibula

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8
Q

Distal attachment of soleus?

A

Post. surface of calcaneus

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9
Q

Proximal attachment of the plantaris?

A

Inf. end of lat. supracondylar line of femur

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10
Q

Distal attachment of plantaris?

A

Post. surface of calcaneus

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11
Q

Name the deep muscles of the posterior compartment of the leg?

A
  1. Popliteus
  2. Flexor hallucis longus
  3. Flexor digitorum longus
  4. Tibialis posterior
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12
Q

Main action of the popliteus?

A
  • Weakly flexes knee

- Unlocks knee

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13
Q

Main action of the flexor hallucis longus?

A
  • Flexes big toe

- Weakly plantar flexes ankle

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14
Q

Main action of the flexor digitorum longus?

A
  • Flexes lat. 4 digits

- Plantar flexes ankle

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15
Q

Main action of the tibialis posterior?

A
  • Plantar flexes ankle

- Inverts foot

16
Q

Innervation of deep muscles of posterior compartment of leg?

A

Tibial n.

17
Q

Proximal attachment of the popliteus?

A

Lat. surface of lat. condyle of femur

18
Q

Distal attachment of popliteus?

A

Post. surface of tibia (sup. to soleal line)

19
Q

Proximal attachment of the flexor hallucis longus?

A

Inf. 1/2 of post. surface of fibula

- Interosseous membrane

20
Q

Distal attachment of flexor hallucis longus?

A

Base of distal phalange of big toe

21
Q

Proximal attachment of the flexor digitorum longus?

A

Med. part of post. surface of tibia (inf. to soleal line)

22
Q

Distal attachment of the flexor digitorum longus?

A

Base of distal phalanges of lat. 4 digits

23
Q

Proximal attachment of the tibialis posterior?

A
  • Post. surface of tibia (inf. to soleal line)
  • Interosseous membrane
  • Post. surface of fibula
24
Q

Distal attachment of tibialis posterior?

A
  • Tuberosity of cuboid, navicular & cuneiform

- Base of 2nd, 3rd & 4th metatarsals

Musculo-Skeletal (22 decks)

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