Chapter 14- Cancer

A summary of the 14th chapter- Cancer of the AQA GCSE Human Health and Physiology textbook

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  • Created by: R_Hall
  • Created on: 16-06-12 13:26

14.1 Cancer

  • Occasionally, cell division will become uncontrollable due to a genetic mutation of a cell. This abnormal growth forms a tumour
  • If the tumour stays in one place it is benign, and only a problem if it compresses another tissue. Treatments include surgery or chemotherapy/radiotherapy
  • Malignant tumour  are those which spread to healthy tissue, and are cancerous
  • The lymph system is a network of vessels that carries lymph (white blood cells in a clear liquid) between tissues and blood system.
  •  Lymph passes through glands are can transport cancer to these regions. If the immune system doesn't destroy the cancer cells, then a secondary tumour may grow. This is why lymph glands close to tumours are often removed
  • There are many causes of cancer including carcinogens, environmental factors, X-rays, diet and age
  • If a person has a bump, changes in moles or other worries, a GP may run blood tests, X-rays and maybe a biopsy to diagnose cancer
  • Cancer treatments include surgery, chemotherapy (using drugs), radiotherapy (using high energy rays) or bone marrow/stem cell therapy to replace bone marrow cells that are killed with cancer cells
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