BSNC 1000 PERFUSION Exam Questions and Answers All Correct

BSNC 1000 PERFUSION Exam Questions and Answers All Correct Radius - Answer-Biggest affect on blood flow through a vessel Activation of Sympathetic NS - Answer-- Decreases vessel diameter - Increases CO - Increases TPR Perfusion - Answer-The supply of oxygen to and removal of wastes from the cells and tissues of the body as a result of the flow of blood through the capillaries. Arterial System - Answer-Distributes blood and regulates pressure Capillary beds - Answer-Transfer of materials between circulation and tissues Venous System - Answer-Returns blood to heart volume reservoir Scope of Perfusion - Answer-Optimal - Impaired - No Perfusion Ischemia (cell injury) - Answer-Impaired perfusion Infarction (cell death) - Answer-No Perfusion Blood Pressure - Answer-Force of blood against the walls of blood vessels Systolic Pressure - Answer-BP during systole - ventricles contract Diastolic Pressure - Answer-BP during diastole - ventricles relax Pulse Pressure - Answer-Systole - Diastole (normal = 40-45 mmHg) MAP = - Answer-CO x TPR MAP ≈ - Answer-Diastolic Pressure - 1/3(Partial Pressure) Blood Volume Influenced By: - Answer--sodium ingestion and excretion -renin/aldosterone Vasoconstriction Influenced By: - Answer-- Autonomic NS - Kidney renin/angiotensin - Adrenal medulla hormones Cardiac Output Influenced By: - Answer-- BPM - Volume of blood Peripheral Resistance Influenced By: - Answer-- Vasoconstriction - Vasodilation - Local Factors (pH, hypoxia) - Sympathetic stimulation of smooth muscle of vessel walls - Blood viscosity - Vessel radius Vasodilation Influenced By: - Answer-- Autonomic NS - Kidney: vasodilators - Hormonal factors