Final answer:
The statement is false; a pronated grip means the palms are facing backward or downward, not up. Pronation involves internal rotation of the forearm, leading to the 'palm backward' position, whereas supination leads to the 'palm forward' or upward position.
Step-by-step explanation:
The statement that a pronated grip would be palms up is False. In terminology related to the forearms' movement, pronation is a motion that rotates the forearm causing the palm to face backward or downward if the arm is outstretched. Conversely, supination is the movement that turns the forearm so the palm faces forward or upward in the anatomical position, where the radius and ulna are parallel.
This is often associated with the terms 'palm backward' and 'palm forward' position. The pronators in the forearm that facilitate this movement are the pronator teres and the pronator quadratus, while the supinator muscle is involved in the opposite movement.