Whiteblood cells or leukocytes aid in fighting infections, allergy, andpathogenic organisms in the body (Wingerd, 2013). The leukocytes aremanufactured in the bone marrow and then transported to the rest ofthe body in the bloodstream. The white blood cells are divided intofive categories each having their function in fighting infectiousmicroorganisms. The leukocytes include neutrophils, lymphocytes,eosinophils, monocytes, and basophils (Wingerd, 2013).
Theneutrophils constitute 50 to 70 percent of the white blood cells. Amature neutrophil is twice the size of a red blood cell and containsa segmented nucleus. The neutrophils’ role is to fight infectionsin the body by ingesting microorganisms and releasing enzymes thatkill the pathogens in the body (Wingerd, 2013). On the other hand,the lymphocytes also known as B-cell and T-cells comprise of 25percent of leukocytes. The lymphocytes have one piece nucleus and aremainly contained in the lymph nodes. The primary function of thesecells is to make antibodies, which protect the body againstinfectious agents (Wingerd, 2013). Besides, the lymphocytes act asmemory cells because they remember foreign invaders and work muchfaster to produce antibodies when a person is infected with the sameinfectious agent.
Thenagain, the monocytes constitute six percent of the white blood cells(Wingerd, 2013). They create macrophage in the blood stream, whichaids in killing microorganisms, remove dead cells from the body, andingest foreign materials. On the other hand, the eosinophils make upthree percent of leukocytes. These cells contain granules thatrelease enzymes to fight an infection (Wingerd, 2013). Eosinophilsare responsible for combating multicellular pathogens and infections,allergic reaction, and asthma in human beings and other vertebrates.Although eosinophils’ primary function is to fight allergicreactions, they are also manufactured in large numbers when a personhas a parasite. Lastly, Basophils are the least in number making uponly one percent of leukocytes. They contain small particles thatproduce enzymes during an allergic reaction and asthma in the humanbody (Wingerd, 2013).
Therefore,the different types of white blood cells have distinct roles, whichcollectively form the immune system of the body. Finally, an easy wayof remembering the five types of white blood cells is using theacronym NELMB.
Wingerd,B. (2013). TheHuman Body: Concepts of Anatomy and Physiology (3rded.).Baltimore, MD: Lippincott Williams & Wilkins.