Coronary Arterial Disease and Intercostal Nerves Quiz
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Questions and Answers

What is the term that refers to the increase of the heart rate during inspiration and its decrease during expiration?

  • Respiratory sinus arrhythmia (correct)
  • Vagal reflex disorder
  • Cardiac respiratory cycle
  • Tachycardia syndrome

What primarily causes the increase of heart rate during inspiration in young individuals and children?

  • Decrease in vagal tone
  • Impulses from the expiratory center
  • Activation of the parasympathetic nervous system
  • Stretch receptors in the lungs (correct)

Which center is responsible for impulses discharged during inspiration that lead to heart rate acceleration?

  • Cardiac inhibitory center
  • Vagal nerve center
  • Expiratory center
  • Inspiratory center (correct)

What happens to cardiac vagal tone during inspiration?

<p>It is decreased resulting in heart acceleration (A)</p> Signup and view all the answers

Which phenomenon is commonly observed normally in young individuals and children?

<p>Respiratory sinus arrhythmia (D)</p> Signup and view all the answers

What effect do impulses discharged from certain stretch receptors in the lungs have on the cardiac inhibitory center?

<p>Inhibit the center during inspiration (B)</p> Signup and view all the answers

What occurs to heart rate during expiration?

<p>Decrease due to lack of impulses from stretch receptors (B)</p> Signup and view all the answers

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