BSNC 1000 - PERFUSION
Radius - answerBiggest affect on blood flow through a vessel
Activation of Sympathetic NS - answer- Decreases vessel diameter
- Increases CO
- Increases TPR
Perfusion - answerThe supply of oxygen to and removal of wastes from the cells and tissues
of the body as a result...
BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
BSNC 1000 - PERFUSION
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
Peripheral Resistance - answer✔✔Force that must be overcome to push blood through the
circulatory system
Blood Viscosity Decreases Because: - answer✔✔- 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? - answer✔✔- Viscosity of blood (Increase = decrease in flow)
- Velocity of blood
- Vessel Radius
- Vessel Elasticity
What influences Viscocity? - answer✔✔- RBCs
- Hydration
- Proteins
What is the vessel radius mostly controlled by? - answer✔✔Sympathetic NS
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