Ch 2 Flashcards
Physiologic atrophy occurs with
Early development
Atrophy is a decrease in
Cellular size
This type of atrophy occurs as a result of decrease in workload, use, pressure, blood supply, nutrition, hormonal stimulation, and nervous stimulation
Pathologic atrophy
Aging causes brain cells and endocrine dependent organs to become
Atrophic
An increase in the size of cells by increased work demands or hormonal stimulation
Hyper trophy
Increase in the number of cells caused by an increased rate of cellular division
Hyperplasia
This process enables certain organs to regenerate
Compensatory hyperplasia
This process is stimulated by hormones to replace lost tissue or support new growth such as in pregnancy
Hormonal hyperplasia
Abnormal proliferation of normal cells in response to excessive hormonal stimulation of growth factors
Pathologic hyperplasia
Abnormal change in the size, shape, and organization of mature tissue cells
Dysplasia
Reversible replacement of one mature cell type by another less mature cell type
Metaplasia
What is the most common cause of hypoxia
Ischemia
This can cause activation of protein kinases, activation of phospholipases, membrane damage, and damage of the cytoskeleton
Free calcium in the cytosol
The sum of changes after local cell death, includes inflammation and cellular lysis
Necrosis
Tissue necrosis caused by hypoxia and subsequent bacterial invasion
Gangrene