« previous next »

Author Question: Which of the following gases would diffuse fastest across the alveolar-capillary membrane? a. Air ... (Read 40 times)

Frost2351

  • Hero Member
  • *****
  • Posts: 557
on: Jul 16, 2018
Which of the following gases would diffuse fastest across the alveolar-capillary membrane?
 
  a. Air
  b. Carbon dioxide
  c. O2
  d. Nitrogen

Question 2

Assuming a constant FiO2 and carbon dioxide production, which of the following statements is correct?
 
  a. An increased PACO2 will result in and increased PAO2.
  b. Increased FIO2 blows off carbon dioxide.
  c. Increases in alveolar ventilation (VA) decrease the PACO2 and increase the PAO2.
  d. The PAO2 varies proportionally with the PACO2.


Liddy

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
Carbon dioxide diffuses approximately 20 times faster across the alveolar-capillary membrane than does O2, because of its much higher solubility in plasma.

Answer to Question 2

ANS: C
With a constant carbon dioxide production, a decrease in alveolar ventilation (VA) simultaneously raises the PACO2 and lowers the PAO2.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

The resting membrane potential. The resting membrane potential.
Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I
Membrane Synthesis, lipid Bilayers, Enzymes function Membrane Synthesis, lipid Bilayers, Enzymes function
Eukaryotic signal transduction systems involving membrane receptors (1–5)/ second messengers (1-4) Eukaryotic signal transduction systems involving membrane receptors (1–5)/ second messengers (1-4)
Wind turbines: the fastest-growing energy sector Wind turbines: the fastest-growing energy sector
Video: Inflammation Animation

For a complete list of videos, visit our video library