The Human Body Major Systems & Organs - The Immune System And Lymphatic System

The video explains the immune system, primarily located in the blood, as a subsystem of the circulatory system. It describes how white blood cells fight pathogens like bacteria, viruses, and fungi. The immune response involves recognizing and attacking foreign invaders, aided by proteins and antibodies. The lymphatic system also plays a crucial role in fighting infections by filtering out microorganisms. Vaccines help train the immune system by introducing disabled pathogens, enabling the body to recognize and combat future infections effectively.

What new insight or understanding did you gain from this video?