Question

Where does the extensor digitorum longus originate and insert? And what is its action?

Answer 1

The extensor digitorum longus muscle originates from the lateral condyle of the tibia and the upper three-quarters of the front of the fibula. It inserts into the bases of the second to fifth toes through the extensor expansions. Its action is to extend the second to fifth toes and dorsiflex the foot at the ankle joint.

Step-by-step explanation:

The extensor digitorum longus muscle originates from the lateral condyle of the tibia and the upper three-quarters of the front of the fibula. It inserts into the bases of the second to fifth toes through the extensor expansions. The action of the extensor digitorum longus is to extend the second to fifth toes and dorsiflex the foot at the ankle joint.