Human Brain Overview and Structure

Human Brain Overview

• The human brain is the central organ of the nervous system.
• It controls most of the body's activities.
• A human brain weighs approximately 1.4 kilograms.
• The brain is divided into two hemispheres.

Brain Structure

• The brain consists of three main parts: cerebrum, cerebellum, and brainstem.
• The cerebrum is the largest part and processes information from touch, sight, and sound.
• It also houses the centers for speech, learning, and emotion.
• The cerebellum is located at the back of the brain and controls movement and balance.
• The brainstem connects the brain to the spinal cord, forming the central nervous system.

Subcortical Structures

• The hypothalamus is a small structure that regulates body temperature, blood pressure, hormones, and controls hunger and thirst.
• The pituitary gland is connected to the hypothalamus and secretes hormones, linking the nervous and endocrine systems.
• The amygdala, found in each hemisphere, is primarily responsible for processing emotions.
• The hippocampus is involved in memory.