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