Respiratory System Anatomy Quiz
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Questions and Answers

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

  • Eustachian tubes
  • Nasal cavity (correct)
  • Oropharynx
  • Conchae
  • What structure separates the right and left nostrils in the nose?

  • Epiglottis
  • Septum (correct)
  • Cilia
  • Conchae
  • What do defensins do in the nasal cavity?

  • Warm incoming air
  • Connect to the ears
  • Fight infections (correct)
  • Regulate air volume in the lungs
  • Which part of the throat splits food into the esophagus and air into the trachea?

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

    What is the main function of cilia in the larynx?

    <p>Beat mucus and debris upward</p> Signup and view all the answers

    Which structure closes the trachea while swallowing food?

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

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

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

    At higher altitudes, why does hemoglobin saturation drop to around 67% compared to about 98% at sea level?

    <p>Lower partial pressure of oxygen in the air</p> Signup and view all the answers

    What is a key factor contributing to acute mountain sickness (AMS) at high altitudes?

    <p>Low partial pressure of oxygen in the air</p> Signup and view all the answers

    Why is it important for acclimatization to occur slowly and over a period of time at high altitudes?

    <p>To allow the body to adjust to lower levels of oxygen in the air</p> Signup and view all the answers

    What is a key role of the mother for a fetus regarding breathing and gas exchange?

    <p>Providing oxygen and removing carbon dioxide for the fetus</p> Signup and view all the answers

    How does fetal breathing movement contribute to healthy development in a fetus?

    <p>Exhaling fluid and inhaling air for muscle development</p> Signup and view all the answers

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

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

    What does hyperpnea refer to?

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

    Which gas has a very high pressure but low solubility in liquid?

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

    What is the function of the peripheral chemoreceptors?

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

    What is the main way oxygen is transported in the blood?

    <p>Bound to hemoglobin</p> Signup and view all the answers

    What causes bronchodilation in response to high pressure of carbon dioxide in the alveoli?

    <p>Low pH</p> Signup and view all the answers

    What is the primary form in which carbon dioxide travels in the blood?

    <p>As bicarbonate</p> Signup and view all the answers

    What is Henry's Law related to?

    <p>Effect of solubility and partial pressure of gas on dissolution in a liquid</p> Signup and view all the answers

    What triggers an increase in ventilation when oxygen levels decrease significantly?

    <p>High O2 levels</p> Signup and view all the answers

    What happens to pulmonary arterioles with high levels of oxygen in the alveoli?

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

    Which structure in the lungs is responsible for cleaning debris and killing pathogens?

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

    What is the function of the visceral and parietal pleura surrounding the lungs?

    <p>Lubricate the lungs</p> Signup and view all the answers

    What is the purpose of the transpulmonary pressure in the lungs?

    <p>Keeps lungs inflated</p> Signup and view all the answers

    What influences ventilation in the lungs based on their size and air passage?

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

    Which volume represents the air that never reaches the alveoli?

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

    What is the primary control center for respiratory rate in the body?

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

    Which term refers to the number of breaths taken per minute?

    <p>Respiratory rate</p> Signup and view all the answers

    What is the purpose of alveolar sacs in the respiratory zone of the lungs?

    <p>Gas exchange</p> Signup and view all the answers

    What is the term for the smallest area in the lungs where gas exchange occurs?

    <p>Respiratory zone</p> Signup and view all the answers

    Which nerves are responsible for causing bronchoconstriction and bronchodilation?

    <p>Sympathetic and parasympathetic nerves</p> Signup and view all the answers

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