GCSE Combined Science (AQA)
622 videos | 38 hours
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Organisation
Animal Tissues, Organs and Organ Systems
Cancer
1:54
Cancer and the Cost of Disease
Spec
4.2.2.7
- Cancer results from cellular changes that lead to uncontrolled growth and division.
- Normal cell differentiation or division can malfunction, affecting certain genes.
- This uncontrolled division occurs through mitosis, leading to abnormal cancer cells.
- These abnormal cells can cluster to form a tumor.
- Common cancers in the UK include breast, lung, prostate, and bowel cancer.
- Benign tumors consist of abnormal cells confined to one area, contained within a membrane, and do not spread to other body parts.
- Although benign tumors are not cancerous and do not spread, they can grow large and potentially threaten life by pressuring organs.
- Malignant tumor cells are cancerous, not contained, and can invade neighboring tissues.
- Malignant cancer cells spread to other body parts through the bloodstream, leading to secondary tumors.
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