(Solved):
The extensor digitorum longus and extensor hallucis longus can both extend the toes and dorsiflex ...
The extensor digitorum longus and extensor hallucis longus can both extend the toes and dorsiflex the foot (although only weakly in the case of the extensor hallucis longus). Why are they able to do both actions? Because they cross both the ankle joint and the MTP joints. Because in both cases, the distance between the origin and the joint is relatively long. Because they insert on the dorsal side of the foot.