Anatomy of the Nasal Cavity and Pharynx
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Questions and Answers

What is the process of external respiration?

  • Utilizing O2 and releasing CO2 and energy
  • Exchange of gases between blood and tissues
  • Conversion of oxygenated blood into deoxygenated
  • Bringinging air from the external environment and transporting it to the cell while CO2 is carried from the cell to the external environment (correct)

During external respiration, what is the direction of oxygen movement?

  • From tissues to blood
  • From blood to tissues
  • From capillaries to alveoli
  • From alveoli to capillaries (correct)

What is the partial pressure of oxygen in the capillaries?

  • 105 mmHg
  • 100 mmHg
  • 40 mmHg (correct)
  • 45 mmHg

What is the fate of HCO3 in the blood?

<p>It is converted to CO2 and H2O (B)</p> Signup and view all the answers

What is the outcome of the exchange between the lungs and the blood?

<p>Deoxygenated blood becomes oxygenated (A)</p> Signup and view all the answers

What is the direction of carbon dioxide movement during external respiration?

<p>From capillaries to alveoli (A)</p> Signup and view all the answers

What is the percentage of available O2 that enters cells at rest?

<p>25% (C)</p> Signup and view all the answers

What is the primary form of CO2 transport in the blood?

<p>HCO3- (B)</p> Signup and view all the answers

What is the process of internal respiration?

<p>Exchange of gases between blood and tissues (A)</p> Signup and view all the answers

What happens to oxygen during exercise?

<p>More oxygen is absorbed (B)</p> Signup and view all the answers

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