Respiratory System Anatomy and Function Quiz
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Questions and Answers

Which structure in the respiratory system regulates the volume of air that enters the lungs?

  • Vocal cords (correct)
  • Conchae
  • Epiglottis
  • Eustachian tubes
  • What is the function of the conchae in the nose?

  • Produce mucus to trap debris
  • Regulate the volume of air in the lungs
  • Connect the nasal cavity to the ears
  • Disrupt air flow to clean and warm incoming air (correct)
  • What is the main pathway for air in the respiratory system?

  • Nose (correct)
  • Eustachian tubes
  • Epiglottis
  • Conchae
  • Which structure separates the right and left nostrils in the nasal cavity?

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

    What slows down the cilia in the respiratory system, potentially resulting in a runny nose?

    <p>Cold air</p> Signup and view all the answers

    Where is the sense of smell area located in the respiratory system?

    <p>Nasal cavity</p> Signup and view all the answers

    What is the function of alveolar macrophages in the respiratory system?

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

    Which lung has a cardiac notch?

    <p>Left lung</p> Signup and view all the answers

    What is the purpose of pleural fluid in the respiratory system?

    <p>To lubricate the lungs and keep them in place</p> Signup and view all the answers

    What is the primary function of the pulmonary artery?

    <p>To carry deoxygenated blood away from the lungs</p> Signup and view all the answers

    Which pressure allows the lungs to remain inflated by creating a difference with atmospheric pressure?

    <p>Intrapleural pressure</p> Signup and view all the answers

    What influences ventilation due to the size of the lungs and air passage size?

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

    What is the term for air that never reaches the alveoli in the respiratory system?

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

    What is the total volume of air that can be moved in and out of the lungs called?

    <p>Vital capacity</p> Signup and view all the answers

    What is tidal volume?

    <p>The air entering the lungs during quiet breathing</p> Signup and view all the answers

    What is the smallest area where gas exchange takes place within the lungs known as?

    <p>Alveolar sac</p> Signup and view all the answers

    What is hyperpnea?

    <p>An increase in ventilation not fully understood</p> Signup and view all the answers

    Why does increasing altitude lead to a decrease in hemoglobin saturation?

    <p>Higher altitude decreases atmospheric pressure affecting hemoglobin saturation</p> Signup and view all the answers

    What is the main issue with exercising at high altitudes?

    <p>The inability to supplement oxygen inhalation due to low reserves</p> Signup and view all the answers

    At what altitude does Acute Mountain Sickness (AMS) usually occur?

    <p>Around 8000 ft or higher</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 purpose of fetal breathing movements during pregnancy?

    <p>To inhale and exhale amniotic fluid for muscle development</p> Signup and view all the answers

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

    <p>Sends signals to the diaphragm and intercostal muscles to contract</p> Signup and view all the answers

    Which center in the pons inhibits the dorsal respiratory group (DRG)?

    <p>Pneumotaxic center</p> Signup and view all the answers

    What is the primary function of the ventral respiratory group (VRG) in the medulla oblongata?

    <p>Stimulates accessory muscles for forced inspiration</p> Signup and view all the answers

    How does the medulla and pons control breathing depth and rate?

    <p>By detecting toxic carbon dioxide levels</p> Signup and view all the answers

    What causes an increase in breathing rate to remove toxic carbon dioxide from the body?

    <p>Increase in hydrogen ions due to carbon dioxide</p> Signup and view all the answers

    In external respiration, where does oxygen have a lower amount in the blood?

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

    What is the primary function of a pulse oximeter?

    <p>Test saturation level of hemoglobin carrying oxygen</p> Signup and view all the answers

    In which form does most bicarbonate travel in the body?

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

    What happens when carbon dioxide binds to hemoglobin after oxygen has been released?

    <p>It decreases hemoglobin saturation.</p> Signup and view all the answers

    What is hyperpnea?

    <p>Increase in rate and depth of ventilation.</p> Signup and view all the answers

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