Some of these muscles perform various muscle actions but what muscle action do they ALL perform?
- Finger flexion
Wrist extension
Wrist flexion
Radial deviation

Which of the following defines scoliosis? a. a posture disorder characterized by the shoulders being rounded and the back hunched b. a posture disorder in which the spine curves up the back like a snake c. a posture disorder characterized by excessive curvature or arch in the lower back d. none of the above