Respiratory Influences and Control Centers Quiz
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Questions and Answers

What is the primary function of the medullary center in the medulla oblongata?

  • Regulating heart rate
  • Maintaining body temperature
  • Controlling voluntary muscle movements
  • Influencing respiration (correct)

    • Which type of hypoxia is characterized by the presence of a toxic agent preventing the tissue from effectively using oxygen?

  • Ischemic hypoxia
  • Hypoxic hypoxia
  • Histotoxic hypoxia (correct)
  • Anemic hypoxia

    • What happens in anemic hypoxia?

  • Oxygen deficiency at the tissue level
  • Blood flow to tissues is reduced
  • Hypercapnia stimulation
  • Decreased ability of hemoglobin to transport oxygen (correct)

    • How does hypercapnia influence respiration?

    <p>Stimulates central chemoreceptors</p> Signup and view all the answers

    Besides cyanide poisoning, what other condition can lead to histotoxic hypoxia?

    <p>Carbon monoxide poisoning</p> Signup and view all the answers

    What role does cortical influence play in respiration?

    <p>Allowing conscious control of respiration</p> Signup and view all the answers

    What adjustment do the respiratory and cardiovascular systems make in response to the intensity and duration of exercise?

    <p>Increase in blood flow to the lungs</p> Signup and view all the answers

    Which factor can increase up to 3 times its value during maximal exercise?

    <p>Oxygen diffusing capacity</p> Signup and view all the answers

    How does aging affect the respiratory system?

    <p>Reduces alveolar macrophage activity</p> Signup and view all the answers

    Which disorder is characterized by chronic airway inflammation and hypersensitivity to various stimuli?

    <p>Chronic obstructive pulmonary disease</p> Signup and view all the answers

    What type of hypoxia may result from decreased hemoglobin production?

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

    Which influence on respiration is characterized by a decrease in the body's ability to respond to changing oxygen levels?

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

    What is the main factor that affects Hemoglobin affinity for Oxygen?

    <p>PO2</p> Signup and view all the answers

    In which direction does carbon dioxide move during internal respiration?

    <p>From systemic capillaries into tissues</p> Signup and view all the answers

    What is the primary function of BPG (Bisphosphate phoglycerate) in red blood cells?

    <p>To decrease Hemoglobin affinity for Oxygen</p> Signup and view all the answers

    Which hormone can increase BPG levels in red blood cells?

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

    Where is the respiratory center, which controls breathing, located in the body?

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

    What type of Hemoglobin has a higher affinity for Oxygen, fetal or maternal?

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

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