Kate Curran Blood The body is made up of several systems, and one of the most important of those in the circulatory system, which is primarily made up of blood. Blood has many different functions. Importantly, the blood transports oxygen, nutrients, enzymes and hormones to tissues throughout the body. It carries Carbon Dioxide and waste products away form tissues. It plays a large role in the regulation of body temperature and controlling the amount of body fluid in the body. It also protects the entire body from disease-causing microorganisms, while also preventing blood loss when blood vessels are damaged by clotting. Blood has several separate cell types, each having their own function. First, the Erythrocytes are used to transport oxygen and Carbon Dioxides throughout the system. The Eukocytes and Neutrophil both kill microorganisms by surrounding and eating them. Basophil cells release histamines, which promote inflammation and heparin. Thhe Eosinophilos release chemicals that reduce inflammations, and attacks certain worm parasites. Lympocytes produce antibodies and other chemicals responsible for destroying microorganisms. Monocytes leave the circulatory system and become a macrophage. And lastly, the platelets for platelet plugs and release chemicals. Though the blood can be broken down into separate functions, it also functions as a whole system. From the heart, blood is pumped throughout the body via veins and arteries. This allows blood to touch nearly every cell in the body, bringing nourishment, waste removal, hormone signals and resistance to foreign invaders to all parts of the body. A tragically common disease pertaining the blood is Leukemia. Leukemia is a type of cancer. When Leukemia begins to develop, the body produces large numbers of abnormal blood cells, and in Leukemia it is most commonly white blood cells these cells look and function differently. There are many different ways to treat this form of cancer. Chemotherapy is the use of drugs to kill cancer cells. Sometimes it requires a combination of drugs. When the drugs are given by IV injection, they enter the bloodstream and reach most Leukemia cells in the body. Radiation is used partnering, Chemotherapy. Radiation involves high-energy rays to kill cancer cells and stunt their growth. A less common treatment is a bone marrow transplant. The patient’s bone marrow is destroyed and replaced by new healthy marrow. Other cancer patients, risk clinical trials, helping doctors test new medications. Unfortunately, cancer treatment has many long-term side effects. Though blood can give some people the creeps, it is actually a very interesting topic. For example, your body contains 8 pints of blood, and 20 trillion red blood cells. Each red blood cell lives for about 120 days and then dies, but your body replaces its red blood cells at a rate of 1-2 million cells per second.