Muscles of the Back of the Leg

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Questions and Answers

The gastrocnemius muscle has two heads. What are they called?

Medial head and lateral head

Name the muscle that assists in flexing the knee and plantar flexing the foot, and is situated beneath the gastrocnemius.

Soleus

The Achilles tendon is the combined tendon of which two muscles?

Gastrocnemius and Soleus

What is the function of the flexor hallucis longus?

<p>Flexes the big toe</p> Signup and view all the answers

What is the general function of the tibialis posterior muscle?

<p>Helps with plantar flexion and inversion of the foot.</p> Signup and view all the answers

Which small muscle is located at the back of the knee and helps to unlock it?

<p>Popliteus</p> Signup and view all the answers

Besides the gastrocnemius, what other muscle inserts onto the calcaneus via the Achilles tendon?

<p>Soleus</p> Signup and view all the answers

Name a muscle located in the posterior compartment of the lower leg that is involved in flexing toes other than the big toe.

<p>Flexor digitorum longus</p> Signup and view all the answers

What is the Tendo Calcaneus commonly known as?

<p>Achilles tendon</p> Signup and view all the answers

What is the function of the Plantaris muscle?

<p>Weakly assists with plantar flexion of the ankle and knee flexion.</p> Signup and view all the answers

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Flashcards

Soleus

Muscle located in the back of the lower leg that flexes the foot and assists in plantar flexion.

Gastrocnemius

Muscle located in the back of the lower leg that is responsible for plantar flexion of the foot.

Popliteus

A small muscle located at the back of the knee that assists with knee flexion and internal rotation of the tibia.

Flexor Hallucis Longus

Muscle that flexes the big toe.

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Tendo Calcaneus

This tendon attaches the calf muscles (gastrocnemius and soleus) to the heel bone (calcaneus).

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Study Notes

  • Muscles of the back of the leg

Bony Origin (Fig 9.3a)

  • Medial head of gastrocnemius
  • Plantaris
  • Lateral head of gastrocnemius
  • Popliteus
  • Soleus
  • Tibialis posterior
  • Flexor hallucis longus
  • Flexor digitorum longus
  • Tendo calcaneus

Lateral View of Superficial Muscles (Fig 9.3b)

  • Gastrocnemius
  • Soleus
  • Tendo calcaneus

Posterior View (Fig 9.3c)

  • Brodie's bursa
  • Plantaris
  • Fabella
  • Gastrocnemius
  • Soleus
  • Tendo calcaneus

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