PAT 20A/B Lecture Notes - Lecture 1: Sequela, Etiology, Lesion

• School: Ryerson University
• Department: Pathotherapeutics
• Course: PAT 20A/B
• Professor: Beth Swart

Document Summary

Pathophysiology: the physiology of altered health: pathophysiology: the cellular and organ changes that occur with disease, but with the effects that these changes have on total body function. World health organization"s definition of health: a state of complete physical, mental, and social well-being and not merely the absence of disease and infirmity. Disease: an acute or chronic illness that one acquires or is born with that causes physiologic dysfunction in one or more body system. Etiology: the causes of disease are known as etiologic factors: biologic agents (bacteria, viruses, physical forces, chemical agents (poisons, alcohol, nutritional excesses or deficits. Most disease-causing agents are non-specific and many different agents can cause disease of a single organ however, a single agent or traumatic event can lead to disease of a number of organs or systems. Risk factors: the multiple factors that may predispose an individual to a particular disease.