Friday, June 29, 2007

Compendium Review

Oxygen is blood, our body pumps five liters of blood through our body daily. Our blood transports the oxygen we need from our lungs and nutrients from our digestive system. To exchange surfaces in the kidneys and lungs it needs to move the waste and carbon dioxide. "Hemoglobin is a pigment that makes red blood cells and blood a red color. The heme is an iron-containing group in the center of each polypeptide chain. The globin is a protein that contains four highly folded polypeptide chains." Heme will accept oxygen, later releasing it to tissues. Four molecules of oxygen can be transported for each hemoglobin. 280 million molecules of hemoglobin are contained with RBC. Over a billion copies of oxygen can be carried by one single red blood cell.
Widely distributed in our environment are microbes. All activities from microbes are accepted greatly by our bodies. Bacteria produced foods are digested by humans everyday. An example of microbes could be, when a tree is on the ground after being cut down, it will eventually begin to rot. How you ask, well, it starts by all the fungi and bacteria, known as decomposer, start by breaking down the dead organism to inorganic nutrients. Which food for us wont be produced because plants need those molecules.
Active immunity is induced most often when are well to prevent future infections from happening.
Passive immunity is when you receive antibodies from an outside course. For example when you are pregnant your baby receives antibodies from you and when they pass through the placenta. Breast-feeding prolongs this because they continue to get it thought the breast milk.
AIDS patients have a deficiency in their immune system. Patients with AIDS seem to show greater risk of cancers and infections. Their immune system just cant keep up to fight off disease like it should.
A known hereditary disease, sickle-cell anemia, are sickle-shaped red blood cells that almost always rupture while moving through the capillaries. When two of the four hemoglobin chains is abnormal it can make a problem arise. In this case red blood cells have about 30 days less of their life then lose of normal red blood cells.

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