Superficial Posterior Leg Compartment | Origins, Insertions, Etc.

This video tutorial provides an in-depth look at the posterior compartment of the leg, focusing on the superficial muscles: gastrocnemius, soleus, and plantaris. It explains their origins, insertions, actions, and innervations. The gastrocnemius and soleus form the triceps surae, crucial for plantar flexion. The plantaris, though minor, aids in proprioception. All muscles are innervated by the tibial nerve and supplied by the posterior tibial artery.

What is the anatomical term for the lower part of the leg?

• Thigh

• Leg

• Foot

• Ankle

Which muscle is not shown in the video but is part of the superficial muscles?

• Flexor digitorum longus

• Plantaris

• Soleus

• Gastrocnemius

What is the common name for the calcaneal tendon?

• Hamstring tendon

• Quadriceps tendon

• Achilles tendon

• Patellar tendon

Which muscle assists in knee flexion but is not the prime mover?

• Soleus

• Gastrocnemius

• Plantaris

• Tibialis posterior

Where does the soleus muscle originate?

• Patella

• Calcaneus

• Tibia and fibula

• Femur

What is the primary action of the soleus muscle?

• Hip flexion

• Dorsiflexion

• Plantar flexion

• Knee extension

Which muscle is considered to have a proprioceptive role rather than a biomechanical one?

• Flexor hallucis longus

• Soleus

• Gastrocnemius

• Plantaris

Which nerve innervates all three muscles in the posterior compartment?

• Femoral nerve

• Tibial nerve

• Common peroneal nerve

• Sciatic nerve

What is the blood supply for the muscles in the posterior compartment?

• Anterior tibial artery

• Femoral artery

• Popliteal artery

• Posterior tibial artery

Which muscle is part of the triceps surae group?

• Plantaris

• Tibialis anterior

• Flexor digitorum longus

• Gastrocnemius