Electric Circuits and Blood Pressure Quiz
37 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the relationship between blood viscosity and resistance according to Poiseuille's Equation?

  • As blood viscosity increases, resistance remains the same.
  • As blood viscosity increases, resistance fluctuates.
  • As blood viscosity increases, resistance also increases. (correct)
  • As blood viscosity increases, resistance decreases.

In the circulatory system, where do we observe the steepest drop in pressure?

  • In the arterioles (correct)
  • In the capillaries
  • In the arteries
  • In the veins

How does total resistance in a series circuit compare to the individual resistances in the circuit?

  • Total resistance is greater than individual resistances. (correct)
  • Total resistance is less than individual resistances.
  • Total resistance fluctuates compared to individual resistances.
  • Total resistance is equal to individual resistances.

What causes the pressure in the venous system to be low?

<p>Compliance of blood vessels (A)</p> Signup and view all the answers

In which part of the circulatory system do we observe pulsatile pressure?

<p>Arteries (A)</p> Signup and view all the answers

Why is the parallel arrangement of capillaries beneficial for their function?

<p>To allow more efficient exchange of substances (B)</p> Signup and view all the answers

In the context of hemodynamics, what does Poiseuille's Equation describe?

<p>The relationship between pressure, radius, and flow rate in blood vessels (C)</p> Signup and view all the answers

Which factor influences blood flow resistance according to Poiseuille's Equation?

<p>Viscosity of blood (A)</p> Signup and view all the answers

What is the primary determinant of total peripheral resistance in the circulatory system?

<p>Mean arterial pressure (D)</p> Signup and view all the answers

How is total peripheral resistance calculated using the cardiovascular system parameters?

<p>(Mean arterial pressure - Right atrial pressure) / Cardiac output (C)</p> Signup and view all the answers

How does an increase in blood vessel compliance affect mean arterial pressure?

<p>Causes an immediate decrease in mean arterial pressure (D)</p> Signup and view all the answers

What role does arteriole constriction play in regulating blood flow through circulation?

<p>Alters vascular resistance to control blood distribution based on tissue needs (D)</p> Signup and view all the answers

Which equation describes the relationship between flow, pressure gradient, and resistance in a vessel?

<p>Poiseuille's Law (D)</p> Signup and view all the answers

What best describes the compliance of a highly compliant vessel?

<p>Small pressure changes with changes in volume (B)</p> Signup and view all the answers

In the circulatory system, what happens during diastole due to arterial elasticity?

<p>Vessels recoil elastically (D)</p> Signup and view all the answers

What happens to the transmural pressure when moving from 200% volume to ~275%, according to the text?

<p>Transmural pressure remains low (A)</p> Signup and view all the answers

Which feature characterizes the movement of blood through distensible branching tubes?

<p>Pulsatile manner (A)</p> Signup and view all the answers

What does a low compliant vessel exhibit in response to changes in volume?

<p>Large pressure changes (B)</p> Signup and view all the answers

What is the primary factor that influences blood flow by affecting resistance and pressure gradient?

<p>Blood vessel radius (D)</p> Signup and view all the answers

In which part of the circulatory system does blood velocity increase with diameter but less than the arterial side?

<p>Veins (D)</p> Signup and view all the answers

What relies on peripheral resistance and cardiac output to determine its value over a complete cardiac cycle?

<p>Mean arterial pressure (MAP) (D)</p> Signup and view all the answers

Which factor plays a crucial role in explaining hemodynamics, especially concerning resistance and pressure gradient in blood vessels?

<p>Vessel compliance (D)</p> Signup and view all the answers

At what Reynolds number (Re) threshold does turbulent flow occur in the circulatory system?

<p>&gt; 2000 (B)</p> Signup and view all the answers

What is the primary determinant of blood flow velocity in blood vessels?

<p>Vessel diameter (A)</p> Signup and view all the answers

How is a change in radius affected according to the information provided?

<p>It is magnified by a power factor of 4 (B)</p> Signup and view all the answers

Why is it beneficial to the CV system to selectively vary blood flow by changing vessel radius?

<p>To allow for increased blood flow to different organs (C)</p> Signup and view all the answers

In the circulatory system, where does the steepest pressure drop occur?

<p>Arterioles (C)</p> Signup and view all the answers

How does vessel radius affect resistance in the circulatory system?

<p>Smaller vessels have less resistance (C)</p> Signup and view all the answers

What type of resistance calculation method involves adding individual resistances together?

<p>Series resistance calculation (D)</p> Signup and view all the answers

Which mathematical model represents total resistance calculation in parallel circuits?

<p>$\frac{1}{RTotal} = \frac{1}{R1} + \frac{1}{R2} + \frac{1}{R3}...$ (A)</p> Signup and view all the answers

In the circulatory system, which type of flow is characterized by streamlining parallel to the tube walls?

<p>Laminar flow (A)</p> Signup and view all the answers

What is the critical number that must be exceeded for turbulent flow to occur in the circulatory system?

<p>Reynolds number (Re) (D)</p> Signup and view all the answers

Which factor is NOT part of the Reynolds number equation for determining turbulent flow in arteries?

<p>Blood pressure (A)</p> Signup and view all the answers

What is the effect of high flow velocity on laminar flow in the circulatory system?

<p>Converts laminar flow to turbulent flow (C)</p> Signup and view all the answers

Which type of flow requires more energy or pressure than streamline flow?

<p>Turbulent flow (C)</p> Signup and view all the answers

What happens when the Reynolds number (Re) exceeds a critical value in a vessel?

<p>Turbulent flow occurs (D)</p> Signup and view all the answers

Which equation is used to calculate the Reynolds number (Re) for fluid flow?

<p>$Re = \frac{dvρ}{ή}$ (A)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser