The brain, a highly complex organ, consists of several distinct parts, each with its unique functions. The cerebral cortex, the outermost layer, is responsible for higher-level thinking processes, sensory perception, and voluntary muscle movement. The limbic system plays a key role in emotions, memory formation, and motivation. The brainstem, which includes the medulla, pons, and midbrain, regulates vital functions such as breathing, heart rate, and sleep-wake cycles. The cerebellum controls balance, coordination, and fine motor skills. Deep within the brain lies the thalamus, acting as a relay station for sensory information, while the hypothalamus manages various bodily functions like temperature, hunger, and thirst.