Cancer develops when the body's normal control mechanism stops working. Old cells do not die and cells grow out of control, forming new, abnormal cells. These extra cells may form a mass of tissue, called a tumor. Some cancers, such as leukemia, do not form tumors.
Important Terms: Malignant - (of a disease) very infectious Benign - not harmful; not malignant Tumor - a swelling of a part of the body caused by overgrowth of tissue, whether malignant or benign Metastasis - the development of secondary malignant growths at a distance from a primary site of cancer Apoptosis - the normal death of cells that occurs during an organism's growth or development So having to many cell is bad, however having too little cell is very bad. Mitosis produces new cells, and replaces cells that are old, lost or damaged. In mitosis a cell divides to form two identical daughter cells. Mitosis splits the nucleus into 2, forming 2 identical cells. This creates homeostasis, which is creating the balance between too much and too little cell. This helps us function properly and stay healthy. Apoptosis is the opposite of Mitosis. This is the death of old, broken, and useless cells. Although Mitosis and Apoptosis are opposites, they work together to keep us healthy and working. Mitosis and Apoptosis, together creates homeostasis. When apoptosis goes wrong, cancer is born. Brain Cancer 1. Brain Cancer is a very dangerous and harsh cancer, because it is on the most important part of your body. 2. As with tumors elsewhere in the body, the exact cause of most brain tumors is unknown. 3. The signs and symptoms of a brain tumor vary greatly and depend on the brain tumor's size, location and rate of growth. General signs and symptoms caused by brain tumors may include:
4. Treatment for Brain tumor differs depending on several factors: a person's age, general health, and the size, location, and type of tumor.
5. There is no known way to prevent Brain Cancer. . |