Cell Adaptation Nur 302 Week 1 PDF
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Uploaded by PeaceableGreen
UNBC (University of Northern British Columbia)
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Summary
This document provides an overview of cell adaptation in the context of nursing 302, week one, at UNBC. It covers different types of cell adaptations like atrophy, hypertrophy, hyperplasia, dysplasia, and metaplasia, and explains the factors causing them. This is a good educational resource for nursing students studying cell function and adaptation.
Full Transcript
Cell Adaptation Nursing 302: Week One Challenges through Cells Life Span Stressors, changes in body’s health, other intrinsic and extrinsic factors can alter a cell’s normal functioning. Cell generally continue to function despite changing conditions or stressors. Severe stress or pr...
Cell Adaptation Nursing 302: Week One Challenges through Cells Life Span Stressors, changes in body’s health, other intrinsic and extrinsic factors can alter a cell’s normal functioning. Cell generally continue to function despite changing conditions or stressors. Severe stress or prolonged stress or changes may injure or even destroy cells. When threatened, the cells draw on its reserves to keep functioning by adaptive changes or by cellular dysfunction. If there are not enough cellular reserves, the cell dies. Adaptive Cell Changes Atrophy. Hypertrophy. Hyperplasia. Dysplasia. Metaplasia. Atrophy A reversable reduction in the size of the cell. It occurs as a result of: disuse, insufficient blood flow, malnutrition, denervation, or reduced endocrine stimulation. Hypertrophy The enlargement of a cell due to an increased workload. It can result from: Normal physiological conditions or abnormal pathological conditions. Enlarged heart. Hyperplasia Increase in the number of cells. Caused by: Increased workload, hormonal stimulation, decreased tissue. Dysplasia Deranged cell growth of specific tissue results in abnormal size, shape, and appearance. Cell changes are adaptive ad potentially reversable, they can precede cancerous changes. Metaplasia Replacement of one adult cell with another adult cell that can better endure the change or stress It’s usually a response to chronic inflammation or irritation.
