Health Sciences 1001A/B Lecture Notes - Melanocyte, Squamous Cell Carcinoma, Canadian Cancer Society

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 1001A/B
• Professor: Shauna Burke

Document Summary

45% of men and 40% of women will have cancer in their lifetime. Cancer is the leading cause of death in canada (followed by heart disease and stroke) Metastasis spread of cancer cells from one part of the body to another. Types of malignant tumours: carcinomas most common type; arise from epithelia (tissue that covers external body surfaces, lines internal tubes and cavities, and form secreting portion of glands) Example: skin, breast, uterus, prostate, lung and gastrointestinal: sarcomas arise from connective and fibrous tissue. Example: muscle, bone, cartilage and membranes covering muscles and fat: lymphomas cancers of lymph nodes (part of body"s infection-fighting system, leukemias cancers of blood-forming cells, which reside in bone marrow. 50% of all cancers may be preventable: tobacco use accounts for 30% of all cancer deaths and 85% of lung cancer. 87% of lung cancer cases can be prevented by avoiding tobacco exposure: poor diet, exercise habits, and obesity account for ~22% of all cancer deaths.