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1. Atrophy
2. hypertrophy
3. hyperplasia
4. metaplasia
5. dysplasia

example: arm shrinks when in cast

only occurs in cells that are capable of mitosis

decrease in workload

example: ventricular enlargement due to hypertension

is a precursor to cancer, but does not always lead to cancer

example: smokers airways change to stratified squamous rather than ciliated columnar

reversible change with one adult cell type replaced by another

results from increased workload

when the irritant is removed, the cells return to normal

increase in number of cells in an organ or tissue

seem mostly in cardiac and skeletal muscle

smaller size cell

this adapatation is marked by degrees and occurs most frequently in the uterus or respiratory tract

usually occurs in response to chronic irritation or inflammation

increase in cells size and usually tissue mass

example: regeneration of the liver after partial removal

example: uterine enlargement during pregnancy

deranged cell growth due to chronic irritation or inflammation