Factors Affecting Blood Flow and Vascular Resistance   The Poiseuille Equation

Factors Affecting Blood Flow and Vascular Resistance The Poiseuille Equation

Assessment

Interactive Video

Science, Health Sciences, Chemistry, Other, Physics, Biology

University

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains the factors affecting blood flow in the cardiovascular system using the Hagen Poiseuille equation. It highlights the importance of the pressure gradient and its role in blood flow, comparing scenarios of rest and exercise. The tutorial also discusses vascular resistance, focusing on blood viscosity, vessel length, and vessel diameter. It explains how these factors influence resistance and blood flow, with a detailed look at how vessel diameter is regulated through vasoconstriction and vasodilation.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of the Hagen-Poiseuille equation in the context of the cardiovascular system?

To determine oxygen levels in blood

To measure blood pressure

To describe factors affecting blood flow

To calculate the heart rate

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which factor is NOT directly related to vascular resistance?

Pressure gradient

Vessel diameter

Blood viscosity

Vessel length

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does an increase in the pressure gradient affect blood flow?

Reverses blood flow direction

Decreases blood flow

Increases blood flow

Has no effect on blood flow

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to blood flow when the heart contracts with more force during exercise?

Blood flow increases

Blood flow stops

Blood flow remains constant

Blood flow decreases

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following increases vascular resistance?

Decreased blood viscosity

Shorter vessel length

Increased vessel diameter

Increased blood viscosity

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What effect does dehydration have on blood viscosity?

Decreases viscosity

Increases viscosity

No effect on viscosity

Reverses viscosity

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does vessel length affect blood flow?

Vessel length has no effect

Longer vessels decrease blood flow

Shorter vessels decrease blood flow

Longer vessels increase blood flow

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