The human brain is the central organ of the nervous system, responsible for controlling thoughts, memory, emotions, touch, motor skills, vision, breathing, and many other vital functions. It consists of three main parts: the cerebrum, which controls higher functions like reasoning and movement; the cerebellum, which coordinates balance and motor control; and the brainstem, which regulates basic life functions such as heart rate and breathing. The brain communicates with the rest of the body through nerves and is protected by the skull and layers of tissue called meninges. It’s a complex organ, essential for human cognition, sensory processing, and overall bodily function.