The region of the brain that receives input from joints and muscles concerning the position of the body parts to maintain posture and balance is the .

The region of the brain responsible for receiving input from joints and muscles about the position of body parts for maintaining posture and balance is the cerebellum.

The cerebellum plays a crucial role in coordinating voluntary movements and is involved in the balance and equilibrium of the body. It integrates sensory information from the spinal cord and other parts of the brain to fine-tune motor activity. By processing proprioceptive input (which provides the brain with information about body position and movement), the cerebellum helps maintain posture and ensures smooth and coordinated movements. Thus, it is essential not only for maintaining balance but also for performing coordinated tasks like walking, running, or even writing.