In order to cope with their environment, cells undergo structural and functional changes. These cellular adaptations are reversible responses that allow cells to survive and continue to adequately function. Adaptive processes consist of increased cellular size and function (hypertrophy), increase in cell number (hyperplasia), decrease in cell size and metabolic activity (atrophy), or a change in the phenotype Phenotype The complete genetic complement contained in the DNA of a set of chromosomes in a human. The length of the human genome is about 3 billion base pairs. Basic Terms of Genetics of the cells (metaplasia). If the stress or stimulus is removed, the cell can return to its original state. However, when the limits of the adaptive responses are exceeded, cellular function is adversely affected, leading to cellular injury.
Last updated: 10 Feb, 2021
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