Cancer

• Mitosis is extremely tight controlled genes in the nucleus tell cells when to divide and when to stop dividing
• Sometimes changes take place in the genes and that leads to uncontrolled growth in mitosis producing a tumour
• Benign tumours are growth of abnormal cells which are found in one area
• Benign tumours are usually contained in a membrane and do not invade other parts of the body
• Malignant tumours invade neighbouring tissues and move into the bloodstream
• Malignant tumour cells are classed as A cancer
• Once in the bloodstream malignant cells spread to different parts of the body and form new tumours
• some cancers are genetic (certain types of breast cancers, prostate cancer and cancer of the large intestine )
• Other cancers are linked to our lifestyle

  • smoking: lung cancer
  • Uv light: skin cancer
  • Alcohol : mouth and throat cancer
• Radon is a radioactive gas which increases your risk of developing lung cancer
• Radon releases ionising radiation which Damages the dna in our cells causing our cells to undergo uncontrolled cell division (cancer)