The immune system plays a crucial role in maintaining homeostasis by defending the body against pathogens and foreign invaders. It employs both nonspecific and specific immune responses to protect against disease. The system relies on various types of receptors and white blood cells to detect threats and mount appropriate defenses. Understanding how the immune system functions is key to comprehending how the body reacts to infections and maintains overall health.
• Key components: Receptors, white blood cells, antibodies, antigens
• Main functions: Recognize harmful organisms, produce immune responses, maintain homeostasis
• Types of immunity: Innate (nonspecific) and adaptive (specific) immunity
• Importance: Protects against diseases, maintains body's equilibrium