Respiratory Centers and Nerves Quiz
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Questions and Answers

Which nerve is responsible for autonomic control of breathing?

  • Sciatic nerve
  • Phrenic nerve
  • Vagus nerve (correct)
  • Femoral nerve
  • What is the function of pneumotaxic and apneustic centers?

  • Regulate heart rate
  • Adjust breathing (correct)
  • Aid in digestion
  • Control body temperature
  • Where are the irritant receptors located?

  • Smooth muscle of airway
  • Alveoli
  • Upper airway (correct)
  • Pulmonary capillaries
  • What do stretch receptors in the lungs respond to?

    <p>Volume of air in the lungs</p> Signup and view all the answers

    What is the function of j receptors located near capillaries in the alveoli?

    <p>Respond to increased pulmonary pressure</p> Signup and view all the answers

    Where are central chemoreceptors located?

    <p>In the brain near respiratory center</p> Signup and view all the answers

    What is the main function of peripheral chemoreceptors located in the carotid bodies?

    <p>Trigger increased respiratory rate in response to low oxygen levels</p> Signup and view all the answers

    In chronic hypercapnia seen in COPD, what is the primary response of the body?

    <p>Increase the rate and depth of respirations</p> Signup and view all the answers

    What is the purpose of the thick smooth muscle layer in the conducting bronchi of the lower respiratory tract?

    <p>To prevent collapses of the airways</p> Signup and view all the answers

    What best describes compliance in the context of lung physiology?

    <p>Ability of chest wall and lungs to stretch in response to pressure changes</p> Signup and view all the answers

    What happens during expiration in terms of ventilation?

    <p>Elastic recoil and gravity cause passive airflow</p> Signup and view all the answers

    What does the vq ratio represent in lung physiology?

    <p>Ratio of air reaching alveoli to blood reaching alveoli</p> Signup and view all the answers

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