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 29 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
Wow, this really help

JaynaD87

  • Member
  • Posts: 368
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

To maintain balance the bipedal pelvis has a foreshortened ilium and is broader and bowl-shaped. The To maintain balance the bipedal pelvis has a foreshortened ilium and is broader and bowl-shaped. The
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
Which is TRUE about the alternation of generations cycle that is diagramed above? Which is TRUE about the alternation of generations cycle that is diagramed above?
Get feedback every 5 to 7 minutes about heat intensity. Add or subtract heat barriers to maintain ... Get feedback every 5 to 7 minutes about heat intensity. Add or subtract heat barriers to maintain ...
The body’s survival depends on mechanisms that maintain internal homeostasis The body’s survival depends on mechanisms that maintain internal homeostasis
A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ... A diagram showing one of Mendel’s crosses. True-breeding strains of pea plants with smooth and ...
Video: What are Taste Receptors? How Does it Work? Animation

For a complete list of videos, visit our video library