Respiratory System Anatomy Quiz
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Questions and Answers

What is the main function of the conducting zone in the respiratory system?

  • Allowing air to go in and out (correct)
  • Regulating the volume of air entering the lungs
  • Secreting defensins to fight infections
  • Producing mucus to trap debris
  • Where is the tip of the nose located anatomically?

  • At the apex (correct)
  • Connected by the bridge
  • Between the eyebrows
  • At the root of the nose
  • Which structure in the respiratory system disrupts air flow to clean and warm incoming air?

  • Conchae (correct)
  • Cilia
  • Septum
  • Epiglottis
  • What is the role of defensins in the respiratory system?

    <p>Fighting infections</p> Signup and view all the answers

    Which structure helps close the trachea while swallowing food?

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

    Why does cold air slow down the cilia in the respiratory system?

    <p>To trap debris effectively</p> Signup and view all the answers

    What is the main cause of alkaline pH in the blood associated with hyperventilation?

    <p>Increased ventilation without oxygen demand</p> Signup and view all the answers

    At what altitude will the hemoglobin saturation be only about 67%?

    <p>19,000 feet</p> Signup and view all the answers

    Why does exercise pose a problem at higher altitudes?

    <p>Low oxygen reserve in the veins</p> Signup and view all the answers

    How is acute mountain sickness (AMS) treated?

    <p>By descending to a lower altitude and higher oxygen pressure</p> Signup and view all the answers

    What is the main purpose of acclimatization at high altitudes?

    <p>Allowing the body to adjust to lower oxygen levels</p> Signup and view all the answers

    When does fetal breathing movement typically begin during pregnancy?

    <p>Around week 20</p> Signup and view all the answers

    What is the main function of the alveolar macrophages mentioned in the text?

    <p>To clean debris and kill pathogens</p> Signup and view all the answers

    Which structure divides the trachea into right and left primary bronchi?

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

    What is the function of the pulmonary artery as described in the text?

    <p>Carries deoxygenated blood to the lungs</p> Signup and view all the answers

    Which factor influences ventilation due to the size of the lungs and airway passage?

    <p>Lung volume</p> Signup and view all the answers

    What is the primary cause of inspiration in a respiratory cycle?

    <p>Contraction of diaphragm</p> Signup and view all the answers

    Which measure represents the total air capacity of the lungs, including all volumes?

    <p>Total lung capacity (TLC)</p> Signup and view all the answers

    What controls the respiratory rate and adjusts it based on oxygen, carbon dioxide, and pH levels?

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

    Which condition describes air that never reaches the alveoli?

    <p>Anatomical dead space</p> Signup and view all the answers

    What is one of the structures that branches out from each bronchus to form a bronchial tree?

    <p>Tertiary bronchus</p> Signup and view all the answers

    What is the role of the dorsal respiratory group (DRG) in the medulla oblongata?

    <p>Sends signals for diaphragm and intercostal muscle contraction</p> Signup and view all the answers

    What happens in the medulla oblongata when there is an increase in hydrogen ions due to the presence of carbon dioxide?

    <p>Ventilation increases to remove carbon dioxide</p> Signup and view all the answers

    Which statement is true regarding the role of peripheral chemoreceptors?

    <p>Detect a small decrease in oxygen levels</p> Signup and view all the answers

    According to Dalton’s Law, what is the relationship between gases in a mixture?

    <p>Sum of each gas pressure is equal to the total pressure</p> Signup and view all the answers

    How does a high level of oxygen in the alveoli affect bronchodilation?

    <p>Leads to pulmonary arteriole dilation</p> Signup and view all the answers

    In which process does oxygen leave the blood during respiration?

    <p>Internal respiration</p> Signup and view all the answers

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