How do leukocytes circulate through the body?

Answer 1

Leukocytes, or white blood cells, circulate through the body primarily via the bloodstream. They move between blood vessels and tissues by passing through the endothelial walls of blood vessels in a process called diapedesis. Once in the tissues, they can migrate toward sites of infection or inflammation by following chemical signals released by damaged cells or pathogens. This dynamic movement enables leukocytes to respond quickly to immune challenges.