BSNC 1000 - PERFUSION EXAM QUESTIONS FULLY SOLVED LATEST UPDATE 2025 ALREADY PASSED
Radius - Answers Biggest affect on blood flow through a vessel
Activation of Sympathetic NS - Answers - Decreases vessel diameter
- Increases CO
- Increases TPR
Perfusion - Answers 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 - Answers Distributes blood and regulates pressure
Capillary beds - Answers Transfer of materials between circulation and tissues
Venous System - Answers Returns blood to heart volume reservoir
Scope of Perfusion - Answers Optimal - Impaired - No Perfusion
Ischemia (cell injury) - Answers Impaired perfusion
Infarction (cell death) - Answers No Perfusion
Blood Pressure - Answers Force of blood against the walls of blood vessels
Systolic Pressure - Answers BP during systole
- ventricles contract
Diastolic Pressure - Answers BP during diastole
- ventricles relax
Pulse Pressure - Answers Systole - Diastole (normal = 40-45 mmHg)
MAP = - Answers CO x TPR
MAP ≈ - Answers Diastolic Pressure - 1/3(Partial Pressure)
Blood Volume Influenced By: - Answers -sodium ingestion and excretion
-renin/aldosterone
Vasoconstriction Influenced By: - Answers - Autonomic NS
- Kidney renin/angiotensin
- Adrenal medulla hormones
, Cardiac Output Influenced By: - Answers - BPM
- Volume of blood
Peripheral Resistance Influenced By: - Answers - Vasoconstriction
- Vasodilation
- Local Factors (pH, hypoxia)
- Sympathetic stimulation of smooth muscle of vessel walls
- Blood viscosity
- Vessel radius
Vasodilation Influenced By: - Answers - Autonomic NS
- Kidney: vasodilators
- Hormonal factors
Peripheral Resistance - Answers Force that must be overcome to push blood through the circulatory
system
Blood Viscosity Decreases Because: - Answers - Anemia: Load that the heart works against is lower so
TPR decreases
- Hypoproteinemia: Plasma proteins go down so blood is thinner so TPR decreases
What influences blood flow? - Answers - Viscosity of blood (Increase = decrease in flow)
- Velocity of blood
- Vessel Radius
- Vessel Elasticity
What influences Viscocity? - Answers - RBCs
- Hydration
- Proteins
What is the vessel radius mostly controlled by? - Answers Sympathetic NS
What controls do the regulation of BP and flow involve? - Answers - Local
- Neural
Radius - Answers Biggest affect on blood flow through a vessel
Activation of Sympathetic NS - Answers - Decreases vessel diameter
- Increases CO
- Increases TPR
Perfusion - Answers 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 - Answers Distributes blood and regulates pressure
Capillary beds - Answers Transfer of materials between circulation and tissues
Venous System - Answers Returns blood to heart volume reservoir
Scope of Perfusion - Answers Optimal - Impaired - No Perfusion
Ischemia (cell injury) - Answers Impaired perfusion
Infarction (cell death) - Answers No Perfusion
Blood Pressure - Answers Force of blood against the walls of blood vessels
Systolic Pressure - Answers BP during systole
- ventricles contract
Diastolic Pressure - Answers BP during diastole
- ventricles relax
Pulse Pressure - Answers Systole - Diastole (normal = 40-45 mmHg)
MAP = - Answers CO x TPR
MAP ≈ - Answers Diastolic Pressure - 1/3(Partial Pressure)
Blood Volume Influenced By: - Answers -sodium ingestion and excretion
-renin/aldosterone
Vasoconstriction Influenced By: - Answers - Autonomic NS
- Kidney renin/angiotensin
- Adrenal medulla hormones
, Cardiac Output Influenced By: - Answers - BPM
- Volume of blood
Peripheral Resistance Influenced By: - Answers - Vasoconstriction
- Vasodilation
- Local Factors (pH, hypoxia)
- Sympathetic stimulation of smooth muscle of vessel walls
- Blood viscosity
- Vessel radius
Vasodilation Influenced By: - Answers - Autonomic NS
- Kidney: vasodilators
- Hormonal factors
Peripheral Resistance - Answers Force that must be overcome to push blood through the circulatory
system
Blood Viscosity Decreases Because: - Answers - Anemia: Load that the heart works against is lower so
TPR decreases
- Hypoproteinemia: Plasma proteins go down so blood is thinner so TPR decreases
What influences blood flow? - Answers - Viscosity of blood (Increase = decrease in flow)
- Velocity of blood
- Vessel Radius
- Vessel Elasticity
What influences Viscocity? - Answers - RBCs
- Hydration
- Proteins
What is the vessel radius mostly controlled by? - Answers Sympathetic NS
What controls do the regulation of BP and flow involve? - Answers - Local
- Neural
