What is the function of leukocytes?

What is the function of leukocytes?

• A. Transport oxygen
• B. Fight disease and immunity
• C. Clot blood
• D. Carry carbon dioxide

Answer: (B)

Leukocytes are white blood cells whose role is to defend the body against infections and other foreign threats. They patrol the bloodstream, migrate to sites of infection, and carry out diverse tasks to protect immunity: some cells engulf and destroy pathogens (phagocytes), others produce antibodies or coordinate the adaptive immune response, and others release signaling molecules to recruit and activate additional immune cells. This immune function is distinct from transporting gases or aiding in clotting: red blood cells carry oxygen and help with carbon dioxide removal, while platelets and clotting factors are the main players in blood clotting.

Leukocytes are white blood cells whose role is to defend the body against infections and other foreign threats. They patrol the bloodstream, migrate to sites of infection, and carry out diverse tasks to protect immunity: some cells engulf and destroy pathogens (phagocytes), others produce antibodies or coordinate the adaptive immune response, and others release signaling molecules to recruit and activate additional immune cells. This immune function is distinct from transporting gases or aiding in clotting: red blood cells carry oxygen and help with carbon dioxide removal, while platelets and clotting factors are the main players in blood clotting.