HIST 101 Chapter : History 101 Ch 1 2 Terms Answered
Document Summary
Cancer is a name given to a large group of disease characterized by the uncontrolled growth or spread of abnormal cells. The second most common cause of u. s. deaths. Nearly 1/2 of men and 1/3 of women will develop it. Lifestyle choices play a significant role in risk. Cancer is characterized by damaged genes that mutate, forming a tumor: benign tumors are harmless unless growth crowds out normal tissue; not-cancerous, malignant tumors grow rapidly, invade surrounding tissue and disrupt normal physiological function; cancerous. A biopsy surgically removes cells to diagnose them. A carcinogen is an external cancer-causing agent. Oncogenes are genes that may play a role in causing cancer. Metastasis when cells of a malignant tumor spread into other tissues or break off and spread to other parts of your body. Angiogenesis occurs when malignant cells produce growth factors that induce capillaries (blood vessels) to supply the tumor with oxygen, helping it to grow.
