Human Brain

The human brain is the most complex organ in the human body and the control center of the nervous system. It is responsible for regulating bodily functions, processing sensory information, enabling movement, and facilitating cognition, emotions, memory, and behavior.

Key Features of the Human Brain:

• Weight: Approximately 1.3 to 1.4 kilograms (about 3 pounds) in adults.
• Structure:
  • Cerebrum: Largest part; divided into left and right hemispheres; involved in reasoning, emotions, problem-solving, and voluntary movement.
  • Cerebellum: Located under the cerebrum; coordinates muscle movements and maintains posture and balance.
  • Brainstem: Connects brain to spinal cord; controls automatic functions like breathing, heart rate, and digestion.

Major Lobes of the Cerebrum:

• Frontal Lobe: Responsible for decision-making, planning, problem-solving, and movement.
• Parietal Lobe: Processes sensory information such as touch, temperature, and pain.
• Temporal Lobe: Involved in hearing, memory, and speech.
• Occipital Lobe: Processes visual information.

Interesting Facts:

• Contains approximately 86 billion neurons.
• Capable of forming new neural connections throughout life (neuroplasticity).
• Consumes about 20% of the body’s energy despite being only 2% of body weight.