Exam (elaborations)
BSNC 1000 - PERFUSION QUESTIONS AND ANSWERS GRADED A+
- Course
- Institution
BSNC 1000 - PERFUSION
[Show more]
Content preview
BSNC 1000 - PERFUSIONRadius - 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) - answerNo Perfusion
Blood Pressure - answerForce of blood against the walls of blood vessels
Systolic Pressure - answerBP during systole
- ventricles contract
Diastolic Pressure - answerBP during diastole
- ventricles relax
Pulse Pressure - answerSystole - Diastole (normal = 40-45 mmHg)
MAP = - answerCO x TPR
MAP ≈ - answerDiastolic 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
Peripheral Resistance - answerForce 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? - answerSympathetic NS
What controls do the regulation of BP and flow involve? - answer- Local
- Neural
- Hormonal
RAAS - answerRenin-Angiotensin-Aldosterone-System
Neurological Control - answer- BP rises
- Arteries stretched
- Baroreceptors increase firing rate
- Vasodilation
- Reduced heart rate
- BP decreases
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now