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jen baiocco

on 5 May 2011

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Transcript of Blood

Blood What are the functions of blood? carries oxygen & nutrients to cells. these materials are needed for
cellular respiration Carries wastes away from all cells of the body Contains cells that help fight infection Parts of the blood Platelets What is plasma? Plasma is the liquid part of blood Plasma is mostly water ...
and dissolved nutrients minerals and oxygen Why are red blood cells important? Why is plasma important? Red blood cells contain the protein hemoglobin which carries the gas oxygen Hemoglobin makes your blood red Why are white blood cells important? White blood cells fight bacteria and viruses What happens when
you get sick? The number of white blood cells increases! Why are platelets important? Platelets help clot your blood When you get cut,
platelets rush to the area to plug the wound Thread-like fibers called fibrin form a sticky net This keeps bacteria out of the wound ...
and allows skin cells below to heal. Diseases of the blood Hemophilia failurue of the blood to clot due to a lack of platelets Anemia red blood cells are unable to carry enough oxygen a diet lacking iron may be the cause a d sickle cell anemia is a type of anemia genetic disorder in which a person has abnormally shaped red blood cells Leukemia over production of immature white blood cells that are unable to fight infection
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