2.4 cancer

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  • Damage to the DNA causes cells to function abnormally
  • 2.4 cancer

    1. 1. Chapter 2: Cell processes andenergyMiss Luzma Fabre
    2. 2. Section 4: Cancer Cancer is a disease in which cells grow and divide uncontrollably, damaging the parts of the body around them There are more than 100 types of cancer
    3. 3. How cancer begins Scientiststhink cancer begins with a mutation, a damage that causes a change in the DNA Cells begin to divide in an uncontrolled way
    4. 4.  First,1 cell develops in an abnormal way. As this cell divides, it produces more abnormal cells. These cells form a tumor A tumor is a mass of abnormal cells that develops when cancerous cells divide and grow uncontrollably
    5. 5. How cancer spreads Some cancerous cells may enter the bloodstream and spread to other areas of the body
    6. 6. Treating and preventing cancer3common ways to treat cancer: surgery, radiation, and drugs that destroy the cancer cells
    7. 7. Surgery When cancer is detected on a specific organ, surgery is the first option Doctors remove the tumor
    8. 8. Radiation Ifthe cancer has spread to other organs or the tumor cannot be removed with surgery, doctors use radiation (uses high energy waves) to destroy fast – growing cancer cells
    9. 9. Chemotherapy Chemotherapy is the use of drugs to treat a disease. These drugs kill cancer cells or slow their growth
    10. 10. Preventing cancer Avoid smoking Follow a healthy diet: eat many fruits and vegetables, avoid foods high in fat such as fatty meats and fried foods Protect your skin from sunlight

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