The human brain is the most complex organ in the known universe, containing approximately 86 billion neurons. This sagittal section reveals the three major divisions: the forebrain, midbrain, and hindbrain, each with specialized functions that work together to control every aspect of human life.
đŦ Brain Divisions
Forebrain: cerebrum and diencephalon for higher functions
Midbrain: connects forebrain and hindbrain, reflexes
Hindbrain: cerebellum, pons, medulla for vital functions
Each region specialized for specific life processes
Brain Insight
Despite weighing only about 3 pounds (2% of body weight), the human brain consumes approximately 20% of the body's total energy, demonstrating its incredible metabolic demands for complex thinking and consciousness.
đ¯ Learning Objectives
Identify the major brain divisions and understand how each region contributes to voluntary and involuntary actions that sustain human life and enable complex behaviors.