Human Physiology Chapter 8: Respiratory System II
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the PO2 of oxygen-poor blood entering the pulmonary capillaries at rest?

  • 95 mm Hg
  • 104 mm Hg
  • 40 mm Hg (correct)
  • 75 mm Hg

In which direction does oxygen diffuse along its partial pressure gradient in the alveolus?

  • Along the surface of the alveolus
  • From the blood into the alveolus
  • Out of the pulmonary capillaries
  • From the alveolus into the blood (correct)

What is the PCO2 of the alveolar air?

  • 75 mm Hg
  • 40 mm Hg (correct)
  • 95 mm Hg
  • 45 mm Hg

What happens to the PCO2 of the blood as it flows past the alveolus?

<p>It decreases (C)</p> Signup and view all the answers

What is the purpose of ventilation-perfusion coupling?

<p>To maintain alveolar airflow proportional to pulmonary capillary blood flow (D)</p> Signup and view all the answers

What process occurs simultaneously with the loading of oxygen into the blood?

<p>Unloading of carbon dioxide from the blood (C)</p> Signup and view all the answers

What is the result of the partial pressure gradient of oxygen in the alveolus?

<p>Oxygen diffuses into the blood (C)</p> Signup and view all the answers

What is the primary function of the alveolus?

<p>To facilitate the exchange of gases between the lungs and the environment (A)</p> Signup and view all the answers

What is the difference between the PCO2 of the alveolar air and the PCO2 of the blood entering the pulmonary capillaries?

<p>The PCO2 of the blood is higher (A)</p> Signup and view all the answers

What is the result of the partial pressure gradient of carbon dioxide in the alveolus?

<p>Carbon dioxide diffuses out of the blood (A)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser