What is the name of the muscle that turns the hand inward so that the palm faces downward?

The muscle that turns the hand inward so that the palm faces downward is called the pronator. The primary function of the pronator is to facilitate pronation, which is the rotational movement of the forearm that results in the palm facing downward or backward. This action is crucial for various daily activities and is an essential movement for nail technicians, as it allows for better positioning and control when working on clients' nails.

In contrast to the pronator, the supinator muscle performs the opposite action, allowing the palm to face upward. The flexor muscles are primarily associated with bending the fingers or wrist, while the extensor muscles are involved in straightening. Understanding the role of these muscles is important for nail technicians to ensure ergonomic practices and prevent injury during their work.