NURS 611 Pathophysiology Exam One Study Guide Contains Exam Tested Questions with Answers (Maryville University)

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NURS 611 Pathophysiology Exam One Study Guide Exam Questions with Answers 1. What is oncotic pressure? a. The amount of hydrostatic pressure required to oppose the osmotic movement of water. Osmot... ic pressure is heavily influenced by plasma proteins. Low plasma albumin causes edema as a result of a reduction of plasma oncotic pressure. 2. Know the difference and concept of hydrostatic pressure. a. Hydrostatic pressure is the mechanical force of water pushing against cellular membranes. Hydrostatic pressure in the vascular system is the blood pressure generated in vessels by the contraction of the heart. At the arterial end of capillaries, fluid moves from the intravascular space into the interstitial space because the capillary hydrostatic pressure, which is influenced by the cardiac system, is higher than the capillary oncotic pressure. 3. The single most common cause of cellular injury is what? a. Hypoxic injury. 4. The cell component that is the MOST vulnerable target of radiation is what? a. Deoxyribonucleic acid (DNA) 5. How do free radicals cause cell damage? a. By giving up an electron, which causes injury to the chemical bonds of the cell membrane. [Show More]

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