Musculus extensor digitorum longus

The video tutorial covers the extensor digitorum longus muscle, one of the three extensors of the lower leg. It details the muscle's anatomy, including its origins on the tibial lateral condyle and other areas, and its tendon structure. The video also explains the muscle's innervation by the peroneal nerve and its functions, such as dorsal extension of the foot and pronation in the lower ankle joint. Additionally, it introduces the peronaeus tertius muscle, a variation found in some individuals.

Which muscle group does the extensor digitorum longus belong to?

• Flexors of the lower leg

• Abductors of the lower leg

• Adductors of the lower leg

• Extensors of the lower leg

Where does the extensor digitorum longus muscle originate?

• Medial condyle of the tibia

• Posterior surface of the fibula

• Anterior surface of the femur

• Lateral condyle of the tibia

What is the name of the additional muscle part found in about 90% of the population?

• Peronaeus maximus

• Peronaeus longus

• Peronaeus brevis

• Peronaeus tertius

Which nerve is responsible for the innervation of the extensor digitorum longus?

• Sciatic nerve

• Tibial nerve

• Peroneal nerve per fundus

• Femoral nerve

What movement does the extensor digitorum longus facilitate in the upper ankle joint?

• Dorsal extension

• Adduction

• Inversion

• Plantar flexion