New York Nail Technician License Practice Test

Which muscles in the forearm are responsible for straightening the wrist, hand, and fingers?

1. Flexors

2. Extensors

3. Biceps

4. Triceps

The correct answer is: Extensors

The correct answer emphasizes the role of extensors in the forearm, which are the muscles responsible for extending or straightening the wrist, hand, and fingers. These muscles work by contracting to pull the fingers and hand back, enabling actions such as opening the hand or lifting it away from a surface. Extensors are located along the posterior side of the forearm and are essential for various functions, including gripping and releasing objects. Their proper functioning is vital for a nail technician, as they often engage in movements requiring precision and control of the hands and fingers during nail care services. In contrast, the other options refer to muscle groups that serve different functions. Flexors, for instance, are responsible for bending the wrist, hand, and fingers, making them the opposing group to the extensors. Meanwhile, biceps and triceps are primarily involved in movements of the upper arm and elbow joint rather than directly affecting the wrist and hand movements. Understanding the role of each muscle group is important for nail technicians to prevent strain and ensure proper ergonomics during their work.