The brachioradialis is a large forearm muscle that helps bend the elbow, especially when the hand is in a neutral position, like holding a cup. Controlled by the radial nerve, it also assists with ...

Electrical activity within a chromatophore nerve (Fig. 2, G) causes the radial muscle fibers of the chromatophore (Fig. 2, D) to pull outward toward the perimeter of the chromatophore, expanding ...