Human Perspectives ATAR Units 1 & 2 Summary Quiz
27 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary function of the trachea?

  • To act as a resonating chamber for speech sounds
  • To transport air to and from the lungs (correct)
  • To produce mucus that traps foreign particles
  • To filter out impurities from the air we breathe

    • What is the function of the bronchi?

  • To produce mucus that traps foreign particles
  • To act as a resonating chamber for speech sounds
  • To filter out impurities from the air we breathe
  • To transport air to and from the lungs (correct)

    • What is the purpose of the smooth muscle in the bronchioles?

  • To regulate the diameter of the bronchioles (correct)
  • To produce mucus that traps foreign particles
  • To help produce speech sounds
  • To filter out impurities from the air

    • What structures are found at the end of the bronchioles?

    <p>Air sacs called alveoli</p> Signup and view all the answers

    What is the role of the epiglottis during swallowing?

    <p>To prevent food and liquid from entering the lungs</p> Signup and view all the answers

    Which of the following is NOT a structure that air travels down starting from the outside of the body?

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

    What is the primary function of the pleural fluid?

    <p>To facilitate the movement of the lungs during breathing</p> Signup and view all the answers

    How are the airways in the respiratory system similar to the branches on a tree?

    <p>All of the above</p> Signup and view all the answers

    What is the primary difference between a primary bronchus and a tertiary bronchus?

    <p>The primary bronchus is wider in diameter than the tertiary bronchus</p> Signup and view all the answers

    What is the purpose of the convolutions of the mucus membranes in the nasal cavity?

    <p>To warm and humidify the air before it enters the lungs</p> Signup and view all the answers

    What is the primary driver of the process of inspiration (inhalation)?

    <p>Decreased pressure in the chest cavity</p> Signup and view all the answers

    What causes the pressure of air inside the lungs to decrease during inspiration?

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

    Which of the following statements is true about the process of expiration?

    <p>The diaphragm bulges more into the chest cavity</p> Signup and view all the answers

    What is the primary muscle responsible for changes in chest volume during normal, quiet breathing?

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

    What happens to the rib cage during inspiration?

    <p>It moves upwards and outwards</p> Signup and view all the answers

    How does the pressure difference between the lungs and the outside environment cause air to flow during inspiration?

    <p>Air flows from low pressure to high pressure</p> Signup and view all the answers

    What is the role of the pleura in the process of inspiration?

    <p>It allows the lungs to expand with the expanding chest cavity</p> Signup and view all the answers

    What is the primary function of the constant flow of blood through the capillaries in the context of gas exchange in the lungs?

    <p>Maintain a concentration gradient between alveoli and blood</p> Signup and view all the answers

    What happens to the blood as it flows through the capillaries surrounding each alveolus?

    <p>It picks up carbon dioxide and loses oxygen</p> Signup and view all the answers

    Why is it essential for the concentration gradient of oxygen and carbon dioxide to be maintained during gas exchange?

    <p>To facilitate the diffusion of gases into and out of the blood</p> Signup and view all the answers

    How does the introduction of new blood into the capillaries affect the concentration gradient for gas exchange?

    <p>It maintains the concentration gradient</p> Signup and view all the answers

    What is the role of carbon dioxide in the context of gas exchange in the lungs?

    <p>To enhance oxygen absorption by the blood</p> Signup and view all the answers

    Why is there a constant flow of blood through the capillaries surrounding each alveolus during gas exchange?

    <p>To continuously replenish blood with oxygen and remove carbon dioxide</p> Signup and view all the answers

    What makes it easy for gases to diffuse to and from the body?

    <p>The characteristics mentioned in the text, such as the thin walls of the alveolus and capillary, and the film of moisture lining the alveolus</p> Signup and view all the answers

    What is the function of the artery to the lungs?

    <p>It brings deoxygenated blood to the capillaries</p> Signup and view all the answers

    What is the direction of oxygen diffusion in the alveolus?

    <p>From the air to the blood</p> Signup and view all the answers

    What is the direction of carbon dioxide diffusion in the alveolus?

    <p>From the blood to the air</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser