White Blood Cells

The video tutorial explains the role of white blood cells, also known as leukocytes, in the immune system. It covers different types of white blood cells, including macrophages, neutrophils, and natural killer cells, and their functions in defending the body against pathogens. Macrophages and neutrophils use phagocytosis to engulf and destroy pathogens, while natural killer cells target virus-infected cells by releasing chemicals that damage the cell membrane. The tutorial highlights the coordinated effort of these cells in maintaining the body's defense system.

What role do natural killer cells play in the immune system?

Explain how different types of white blood cells coordinate to defend the body from infection.