Understanding Respiration in Physiology
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Questions and Answers

What causes pressure variation during inhalation?

  • Inhalation of atmospheric air into the lungs
  • Relaxation of the diaphragm muscle
  • Contraction of the diaphragm muscle (correct)
  • Exhalation underwater

Which process is usually passive during breathing out?

  • Running
  • Exhalation (correct)
  • Powerlifting
  • Sneezing

Which activity does not require sustained breath control?

  • Swimming underwater
  • Singing
  • Climbing
  • Powerlifting (correct)

What is the large volume of gas known as that remains in the lungs after each exhalation?

<p>Functional residual capacity (D)</p> Signup and view all the answers

What is the term used for the cellular energy-yielding process during respiration?

<p>Cellular respiration (B)</p> Signup and view all the answers

What is the main focus of physiological respiration?

<p>Removal of carbon dioxide from cells to the outside environment (B)</p> Signup and view all the answers

What is the key difference between physiologic respiration and cellular respiration?

<p>Cellular respiration involves obtaining energy from oxidizing nutrients but physiologic respiration involves gas exchange (C)</p> Signup and view all the answers

What process takes place in the alveoli during inhalation?

<p>Gas exchange between air and blood (B)</p> Signup and view all the answers

Which term refers to the circulation of blood in the pulmonary capillaries?

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

What is the primary function of ventilation in mammals?

<p>Bringing air into the lungs for gas exchange (D)</p> Signup and view all the answers

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