ORAL PATHOLOGY FOR THE DENTAL HYGIENIST 6TH EDITION BY IBSEN 13

MULTIPLE CHOICE 1. A decrease in the size and function of a cell, a tissue, an organ, or the whole body is referred to as: A. emigration. B. atrophy. C. hyperplasia. D. phagocytosis. ANS: B Feedback A Emigration is the passage of white blood cells through the endothelium and wall of the microcirculation into the injured tissue. B Correct! Atrophy is defined as a decrease in the size and function of a cell, a tissue, an organ, or the whole body. C Hyperplasia is the enlargement of a tissue or organ resulting from an increase in the number of normal cells. D Phagocytosis is the process of ingestion and digestion of particulate material by cells. REF: Reactive Tissue Responses, pages 43-44 OBJ: 8 2. The first response of the body to injury is: A. anaphylaxis. B. erythema. C. fever. D. inflammation. ANS: D Feedback A Anaphylaxis is a severe type of hypersensitivity or allergic reaction in which there is an exaggerated immunologic reaction resulting from the release of vasoactive substances such as histamine. B Erythema is redness of the skin or mucosa and is a local sign of inflammation. C Fever is the elevation of the normal body temperature and is a systemic sign of inflammation. D Correct!