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</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</p> Signup and view all the answers

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

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

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

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

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

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

    What is the process of internal respiration?

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

    What happens to oxygen during exercise?

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

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