Brain Structure & their Functions
Brain :
The Brain is defined as the primary organ of the Central Nervous System (CNS), acting as the control center for all physical and mental activities. It is a biological network of approximately 86 billion neurons that process and transmit information through electrochemical signals.
Major Anatomical Structures
The brain is divided into three primary units, each with specialized responsibilities:
- Cerebrum: The largest part of the brain, making up about 85% of its weight. It is divided into two hemispheres (left and right) and is responsible for higher-level functions such as thinking, memory, and voluntary movement.
- Cerebellum: Located at the back of the brain, often called the "little brain". Its primary role is coordinating muscle movements, maintaining posture, and ensuring balance.
- Brainstem: Connects the brain to the spinal cord. It controls automatic life-sustaining functions such as heartbeat, breathing, and blood pressure