GNRS 515 Patho Exam 1 Questions And Answers All Verified

GNRS 515 Patho Exam 1 Questions And Answers All Verified Cellular Adaptation - ANS 1.Atrophy: decrease in cell size 2.Hypertrophy: increase in cell size 3.Hyperplasia: increase in cell number 4. Metaplasia: reversible replacement of one mature cell type by another less mature cell type 5.Dysplasia (atypical hyperplasia): deranged cellular growth (size, shape, and organization) Metaplasia - ANS Reversible replacement of one cell by another cell type Bronchial metaplasia: (in smokers) - normal columnar ciliated epithelial cells, are replaced by stratified squamous epithelial cells (no mucus secretion, no cilia) - Can be reversed - Can be transformed into cancer Barrett esophagus: - normal squamous epithelial lining of the esophagus, is replaced by columnar epithelium (goblet cells of the intestines) - occurs as an adaptation to the chronic irritation of GERD - predisposes to esophageal adenocarcinoma Non-dividing cells, such as myocardial fibers, are capable of hypertrophy, but not hyperplasia A.True B.False - ANS A.True Dysplasia is a common type of normal cellular adaptation A.True B.False - ANS B.False Hypertrophy and hyperplasia rarely occur together. A.True B.False - ANS B.False A man with a history of smoking has a bronchial biopsy showing that the normal columnar ciliated epithelial cells have been replaced by stratified squamous epithelial cells. The man is correctly told that this process could be reversed if he quits smoking A.True B.False - ANS A.True Dysplastic changes may be reversible, but more commonly become malignant. A.True B.False - ANS A.True Which type of cell adaptation occurs when normal columnar ciliated epithelial cells of the bronchial lining have been replaced by stratified squamous epithelial cells? A.Hyperplasia B.Metaplasia C.Dysplasia D.Anaplasia - ANS B.Metaplasia