Final answer:
The dorsal interosseous muscles of the foot support the foot's arches and enable toe movements, particularly extension.
Step-by-step explanation:
The role of the dorsal interosseous muscles of your foot is to provide support for the foot's arches and to facilitate movement of the toes. Unlike the dorsal group, which includes only the extensor digitorum brevis, the plantar group consists of four layers and is responsible for flexing the toes. Moreover, the dorsal interosseous muscles located on the dorsal side of the foot, help extend the toes. They are essential for activities that require toe movements and overall foot stability during ambulation.