Final answer:
Good neuromuscular control is needed for maintaining balance during functional reach. The cerebellum compares motor commands with proprioceptive feedback and adjusts the input to correct any changes. For example, if there is a tap or push on the arms, the cerebellum helps the arms regain the original position.
Step-by-step explanation:
Good neuromuscular control is needed for maintaining balance in the upright position during functional reach. This control involves several components, including the cerebellum, proprioceptive feedback, and motor commands. The cerebellum compares the motor command with the feedback from the body's position and adjusts the descending input to correct any changes. For example, if there is a tap or push on the arms during the reach, the cerebellum sends additional signals to adjust the arm's contraction and regain the original position.