WhiteBlood Cells and Lymphatic System
Whiteblood cells or leukocytes are made in the lymphoid and constitute thecellular part of the blood that does not contain hemoglobin (Chiras142). Leukocyte has a nucleus that allows them to make spontaneousmovements. The white blood cells produce antibodies that defend thebody against disease and infections. A healthy adult has between 4500and 11000 leukocytes, but the body produces them in high numbersduring exercises while the amount reduces when resting (Chiras 142).Leukocytes can also increase in pregnancy, acute emotional reactions,and pain. On the other hand, the white blood cells count can reduceas a response to drugs, infections, and illnesses such asmalnutrition or anemia. The leukocytes can be found in thecirculation, but they are mainly contained in large numbers in thetissues where they fight diseases and infections (Chiras 142). Theleukocytes can only exist as living cells if the body continues toproduce energy. White blood cells regulate the body’s system andmaintain homeostasis by protecting the body from pathogens andforeign agents.
Thewhite blood cells are differentiated into categories due to theirspecific functions. Most of the white blood cells contents includethe neutrophils whose function is to kill foreign agents andbacteria. The lymphocytes are subdivided into T and B cells, whichrecognize specific infections thus, they remove them from the body(Chiras 143). Eosinophils are a type of leukocytes that kills onlyparasites and prevent allergic reactions. Then, basophils are foundin the connective tissues to protect the body from infection after aninjury. Basophils contain heparin that stops the blood from clottingso that the other components of white blood cells can bring moreresources to the injured tissue. On the other hand, basophils’histamine agents expand the blood vessels to make it easier foressential resources to pass to the damaged tissue. Lastly, themonocytes make up eight percent of the white blood cells, whicheliminate bacteria and clean up excess leukocytes after a damagedtissue heals. Therefore, the white blood cells maintain homeostasisby protecting the body from disease-causing virus and bacteria(Chiras 143).
Thelymphatic system comprises of interconnected vessels and lymph nodesthat are distributed throughout the body. It controls the amount ofblood and fluid being transported to the tissues. The lymphaticsystem maintains homeostasis by keeping the body clean of infections,stable, and healthy (Herlihy 373). Thus, it detects the signs ofinfections in the tissue and transports the foreign antigens to thelymph nodes where immune responses take place. The system isincorporated in the immune system and distributed to the tissues andorgans throughout the body to protect it from infections.
Thelymph nodes contain lymphocytes that are important in maintaining thebody’s immunity such as fighting cancer cells, arthritis, and heartdisease. Subsequently, the destroyed bacteria and waste products arecarried into the blood stream where they are eliminated from the bodywith other wastes (Herlihy 373). However, when the body has excessfluid, the capillaries are under pressure that leads to edema. Thelymphatic system also absorbs the triglycerides and fatty acids thatresult from fat digestion thus, it ensures that these materials donot enter directly into the blood stream. Additionally, it maintainsthe pH of acidic urine that protects the urinary system frominfections (Herlihy 374).
Inconclusion, the white blood cells contain antibodies that protect thebody from infections and foreign antigens. They also reduce theadverse response to drugs, infections, or illnesses such asmalnutrition, or anemia. Therefore, the white blood cells aredifferentiated into five categories due to their specific functions.Likewise, the lymphatic system contains vessels and lymph nodes thatare distributed throughout the body to protect the tissues frominfections and diseases. Consequently, all the functions of thelymphatic system and antibodies are combined to maintain homeostasisin the body.
Chiras,Daniel D. HumanBiology.Sudbury, MA: Jones & Bartlett Learning, 2012. Print.
Herlihy,Barbara L. TheHuman Body in Health and Illness.St. Louis, Missouri: Elsevier Saunders, 2014. Print.