MH: 42 – 44 N:48 - 54 Cancer: Cell Division Gone Wrong.

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Presentation transcript:

MH: 42 – 44 N: Cancer: Cell Division Gone Wrong

What is cancer? Cells have genes that control when they undergo mitosis If one of these genes is damaged (mutated) a cell will undergo mitosis uncontrollably, forming a tumour There are 2 types of tumours: 1. Benign 2. Malignant (cancer)

Tumours (neoplasms)

Benign tumours Benign tumours cannot invade neighbouring tissues and therefore are NOT cancerous

Malignant tumours (cancer) Malignant tumours ARE cancerous because they can invade neighbouring tissues Malignant tumours may metastasize if cells break away from the tumour and lead to the formation of tumours elsewhere in the body

Possible causes of cancer Abnormal cell growth my be caused by a variety of sources Heredity Carcinogens Carcinogen – an agent directly involved in causing cancer eg. radiation overexposure, smoking, certain viral infections

Cancer Treatment There are 3 main routes of cancer treatment: 1. Surgery 2. Radiation 3. Chemotherapy There is NO magic bullet cure Prevention is EVERYTHING

Questions N: 55, #2, 3, 5 – 8 & 10 MH: 45, #1, 3 – 6 (full sentences)