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How diseases develop and change cells, tissues and organs, from inflammation and tissue damage to cancer.
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From Pathology: Cell injury and adaptation · Cellular Adaptations
In a long-term smoker, the ciliated columnar lining of the bronchi is replaced by layered flat cells. What is this change called?
- Dysplasia
- Squamous metaplasia
- Epithelial hyperplasia
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Answer: Squamous metaplasia
Metaplasia is the replacement of one mature cell type by another better able to withstand the stress, here tougher squamous cells resisting smoke.
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