Respiratory System Overview
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Questions and Answers

What is the function of alveoli in the lungs?

  • To absorb carbon dioxide from the cells
  • To provide a surface for the exchange of gases (correct)
  • To transport oxygen to all cells in the body
  • To filter out impurities from the air

    • Where is the respiratory pigment haemoglobin found in human beings?

  • In the alveoli
  • In the lungs
  • In the red blood cells (correct)
  • In the muscle tissues

    • Why does air get sucked into the lungs when we breathe in?

  • By the action of the alveoli
  • Due to the compression of the chest cavity
  • Because of the contraction of the diaphragm
  • As a result of the expansion of the chest cavity (correct)

    • How is carbon dioxide mostly transported in our blood?

    <p>In dissolved form</p> Signup and view all the answers

    Why do large animals rely on respiratory pigments for oxygen delivery?

    <p>Diffusion pressure alone is insufficient</p> Signup and view all the answers

    What is the purpose of the residual volume of air always present in the lungs?

    <p>To increase oxygen absorption efficiency</p> Signup and view all the answers

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