All About Cancer. Essay

2038 words - 8 pages

Table of ContentsWhat is cancer?................................................................................................1How do you get cancer?................................................................1Cell division figure...........................................................................................2Who gets cancer?.............................................................................................3How many types of cancer are there?..............................................3What treatments are there against cancer?...................................................3How to prevent cancer................................................................4Cases of cancer per year figure......................................................5Skin cancer..............................................................................5Lung cancer.............................................................................6Breast cancer............................................................................7Prostate cancer.........................................................................8Conclusion...............................................................................9iWhat is cancer?Cancer is a disease that has killed and continues to kill many people. It was named and discovered by Hippocrates, the father of medicine, in about 400b.c. It includes approximately 150 illnesses that can be produced anywhere inside or outside the human body. Even though there are so many, the have one characteristic in common: the uncontrolled growth of cells.How do you get cancer?Normally, cells duplicate constantly: one cell becomes two, these two become four, and these four become eight, then sixteen, 32 and so on. As the new cells form, the old cells die. But, for reasons still unknown, approximately every million divisions, a daughter cell splits off with an altered genetic code. When DNA duplicates with some mistakes, and it happens at the right time, the cell doesn't die, it mutates.Generally, cells multiply in an organized way. A malign tumor is created when these cells grown in an uncontrolled way. An infected gene doesn't mean that you will get cancer, but will increase the risk. The process that makes the infected gene is called initiation, and the cause is known as the initiator. The promoter is the second element that acts on the infected gene that is necessary for the disease to appear.Under a microscope, cancerous cells are clearly distinguished from normal cells.Healthy CancerousCells are round and their membranes are well-defined.Cell's shape is irregular.Only grow inside limits of their own space, then stopCancerous cells displace into other cells, invade organs and tissues that are near.Cells have a nucleus with 23 pairs of chromosomes.Frequently have an overgrown nucleus with less or more chromosomes or abnormal genes.1Cell Division (Mitosis)Steps:Division begins: one pair of centrioles...

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