Final answer:
The brainstem is the lower part of the brain that is joined to the spinal cord. It is involved in autonomic functions, sensory information processing, and coordinating body movements.
Step-by-step explanation:
The brainstem is the lower part of the brain that is joined to the spinal cord. It consists of three parts: the midbrain, the pons, and the medulla oblongata. The brainstem is primarily involved in unconscious autonomic functions and sensory information processing. It also helps coordinate large body movements and relays messages to other parts of the brain.