hypertrophy
The Columbia Encyclopedia, Sixth Edition | Date: 2008
hypertrophy , enlargement of a tissue or organ of the body resulting from an increase in the size of its cells. Such growth accompanies an increase in the functioning of the tissue. In normal physiology the growth in size of muscles (e.g., in an athlete as a result of increased exercise) and also the enlargement of a uterus in pregnancy are caused by hypertrophy of muscle cells. In pathology the thickening of the heart muscle from overstrain, as in hypertension (high blood pressure), is the result of hypertrophy. An organ subjected to extra work (e.g., the one kidney left to function after surgical removal of the other) usually compensates by enlarging; in such cases hyperplasia, an increase in the number of cells, generally accompanies hypertrophy.
Author not available, HYPERTROPHY.,
The Columbia Encyclopedia, Sixth Edition 2008
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
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Related entries from encyclopedias, dictionaries, and thesauruses
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hypertrophy
A Dictionary of Psychology
hypertrophy n. Abnormal enlargement of an organ, structure, or part. Compare atrophy .[From Greek hyper over + trophe nourishment]
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gall
The Columbia Encyclopedia, Sixth Edition
abnormal growth, or hypertrophy, of plant tissue produced by chemical or mechanical (e.g., the rubbing together of two branches) irritants or hormones. Chemical ...
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hyperplasia
The Columbia Encyclopedia, Sixth Edition
: see hypertrophy .
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athlete's heart
The Columbia Encyclopedia, Sixth Edition
... the increased workload required of it, the heart will increase physiologically by enlarging chambers and muscle mass, or hypertrophy by enlarging the size of the chambers and increasing the volume of blood pumped per stroke. Consequently, the heart has to ...
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pathology
The Columbia Encyclopedia, Sixth Edition
... structure produced in any cell, organ, or part of the body by disease. The changes in tissue include degeneration, atrophy, hypertrophy, hyperplasia, and inflammation. The microscope is an important factor in detecting tissue changes, especially in the examination ...
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