« previous next »

Author Question: In what portion of the lungs does alveolar dead space normally occur? a. Apexes b. Bases c. ... (Read 64 times)

mynx

  • Hero Member
  • *****
  • Posts: 555
on: Jul 16, 2018
In what portion of the lungs does alveolar dead space normally occur?
 
  a. Apexes
  b. Bases
  c. Middle portions of the lungs
  d. Terminal respiratory units

Question 2

Which is the correct formula to calculate the alveolar minute ventilation of a spontaneously breathing subject?
 
  a. f  VDS/VT
  b. f  VT
  c. f  (VT  VDSphys)
  d. f  (VT + VDSphys)


micaelaswann

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
In the normal upright subject at rest, alveoli at the apexes of the lungs have minimal or no perfu-sion, and thus contribute to the total volume of dead space ventilation.

Answer to Question 2

ANS: C
Physiologic dead space includes both the normal and abnormal components of wasted ventila-tion. VDphy is the preferred clinical measure of ventilation efficiency. Measuring VDphy more accu-rately assesses alveolar ventilation.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

mynx

  • Hero Member
  • *****
  • Posts: 555
Reply #2 on: Jul 16, 2018
Thank you :)


micaelaswann

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Jul 16, 2018
Happy to help you


« previous next »
 

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Oasis in space: earthrise over the moon's horizon. Oasis in space: earthrise over the moon's horizon.
Meningocele. (a) A meningocele is a herniation of the meninges, usually associated with the spinal c Meningocele. (a) A meningocele is a herniation of the meninges, usually associated with the spinal c
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th
Earth emits radiation back out to space from all surfaces, both day and night Earth emits radiation back out to space from all surfaces, both day and night
What’s a Serving? Eat with Your Hands! Your hands can guide you in estimating portion sizes What’s a Serving? Eat with Your Hands! Your hands can guide you in estimating portion sizes
Video: DNA close up Animation

For a complete list of videos, visit our video library