This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: According to Poiseuille's law, which of the following statements is true if we wish to maintain a ... (Read 31 times)

ereecah

  • Hero Member
  • *****
  • Posts: 530
on: Jul 16, 2018
According to Poiseuille's law, which of the following statements is true if we wish to maintain a constant flow of gases?
 
  a. Alveolar recruitment has its greatest effect on flow.
  b. Halving the tube radius will require a 16-time increase in driving pressure.
  c. Large jumps in driving pressure are need-ed to overcome airway narrowing.
  d. The driving pressure varies directly with the airway circumference.

Question 2

What is the term for the impedance to ventilation caused by the movement of gas through the conducting system of the lungs?
 
  a. Airway resistance
  b. Lung compliance
  c. Surface tension
  d. Tissue elastance


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xMRAZ

  • Sr. Member
  • ****
  • Posts: 363
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
For gas flow to remain constant, delivery pressure must vary inversely with the fourth power of the airway's radius. Reducing the radius of a tube by half requires a 16-fold pressure increase to maintain a constant flow. To maintain ventilation in the presence of narrowing airways, large in-creases in driving pressure may be needed. The energy necessary to generate these pressures can markedly increase the work of breathing.

Answer to Question 2

ANS: A


ereecah

  • Member
  • Posts: 530
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

dyrone

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

True-color image of layers of haze in Titan's atmosphere. True-color image of layers of haze in Titan's atmosphere.
True Forget-Me-Not True Forget-Me-Not
Becoming a Certified Medical Assistant may demonstrate your commitment to the profession and the con Becoming a Certified Medical Assistant may demonstrate your commitment to the profession and the con
To maintain global power requires the continuous development of weapons. Shown here is the Osprey. ... To maintain global power requires the continuous development of weapons. Shown here is the Osprey. ...
How to convert verbal statements into algebraic equations (Part 1) How to convert verbal statements into algebraic equations (Part 1)
Anterosuperior view of true pelvis (blue) Anterosuperior view of true pelvis (blue)
Video: Pneumonia Animation

For a complete list of videos, visit our video library