Cancer cells grow and divide out of control Ch. 9.4.

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Presentation transcript:

Cancer cells grow and divide out of control Ch. 9.4

The timing of cell division is very important If the timing control ‘system’ has an error, cell division goes out of control.

Tumors and Cancer When cells divide and produce a mass, forms a TUMOR Non-cancerous, normal cells are BENIGN (that’s a GOOD THING!!!) Sometimes they can cause a minor health issue, but it’s easily fixed by surgery.

Cells that divide out of control and move throughout the body are a BAD THING!!! Form MALIGNANT TUMORS  cancer cells CANCER  disease caused by the severe disruption of the mechanisms that normally control the cell cycle

Cancer cells can easily spread throughout the body Overtakes the normal body cells When cancer cells spread from origin, called METASTATIS

Cancer Treatment If possible, malignant tumors can be removed by surgery It’s difficult to remove ALL cancer cells though Undergo therapy  radiation therapy (high frequency radiation) or chemotherapy (drugs)

Concept Check List 2 differences between benign tumors and malignant tumors. How might drugs that interfere with mitosis be effective in treating cancer? How is cancer related to cell reproduction?