Which myotome corresponds to the action of extending the great toe?

The myotome that corresponds to the action of extending the great toe is L5. This is because the L5 nerve root is primarily responsible for the function of the extensor hallucis longus muscle, which is the muscle that facilitates the extension of the great toe. When assessing neurological function in the lower extremities, the action of extending the great toe serves as an important indicator of L5 motor function.

Understanding myotomes helps in diagnosing nerve root injuries or conditions affecting the lower limb. The function of other nerve roots, such as L3, L4, and S1, is linked to different movements and muscle groups, which do not directly involve the specific action of extending the great toe. Thus, recognizing that L5 is the correct answer is essential for comprehending the interplay between nerve roots and muscle function in the context of athletic training and injury assessment.