When the flexor carpi radialis and the extensor carpi radialis longus contract simultaneously,which motion results?

Question

Quizplus · Accepted Answer

The flexor carpi radialis and the extensor carpi radialis longus are muscles that work in opposite directions to create wrist movements. The flexor carpi radialis is responsible for wrist flexion and radial deviation, while the extensor carpi radialis longus is responsible for wrist extension and radial deviation. When they contract simultaneously, the dominant motion is radial deviation, which means the wrist moves towards the thumb (which is the side of the radius bone). Therefore, the correct answer is C) Wrist radial deviation.

When the Flexor Carpi Radialis and the Extensor Carpi Radialis