Homeostasis - Nur 214 Introduction to Pathophysiology...

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Nur 214 Introduction to Pathophysiology Homeostasis
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Pathophysiology Physiology: The study of function Pathophysiology: the study of disorder compensatory mechanisms operate to adjust internal conditions promote the normal steady state/balance and survival Hyperpnea after intense exercise to compensate for O2 deficit and excess lactic acid build-up
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Pathophysiology Pathophysiologic processes result when body can’t compensate Heart failure: heart is unable to pump blood to meet the metabolic demands of the body Results in retention of Na & H2O >increases venous pressure >worsens condition The goal of the interaction of the body’s subsystems is to produce balance/steady state/harmony = Homeostasis
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Homeostasis Dr. Claude Bernard (1813- 1878) French Physiologist Dr. Walter Cannon (1871- 1945) American Physiologist
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Homeostasis Key Concepts: Homeostasis: Maintain a stable or uniform internal environment There must be consistency in the internal environment: static condition Coordinated by processes that respond to changes : Involuntary control Regulate, Organize, Coordinate Homeostasis and Adaptation are necessary for balance and survival
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Static Condition Static condition maintained by a dynamic process Only small deviations allowed before self regulating (corrective) measures initiated.
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This note was uploaded on 02/14/2011 for the course NUR 214 taught by Professor Criswell during the Spring '08 term at Purdue University-West Lafayette.

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Homeostasis - Nur 214 Introduction to Pathophysiology...

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