The Respiratory System
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Questions and Answers

What is the term for the process of breathing out?

  • Respiration
  • Exhalation (correct)
  • Oxygenation
  • Inhalation
  • What is the gas produced by the body's cells when they use oxygen to create energy?

  • Carbon dioxide (correct)
  • Nitrogen
  • Helium
  • Oxygen
  • What happens to the carbon dioxide in the blood when it's time to exhale?

  • It goes directly to the lungs
  • It stays in the blood
  • It moves from the alveoli into the capillaries
  • It moves from the capillaries into the alveoli (correct)
  • Why can't you hold your breath for more than a minute or two?

    <p>Because your body needs to bring in oxygen and get rid of carbon dioxide</p> Signup and view all the answers

    What is true about breathing in oxygen and breathing out carbon dioxide?

    <p>Your body does it for you, without you having to think about it</p> Signup and view all the answers

    What is the primary function of the respiratory system?

    <p>To bring oxygen into the body and remove carbon dioxide</p> Signup and view all the answers

    What happens to the air when you inhale?

    <p>It passes through the voice box and into the lungs</p> Signup and view all the answers

    What is the purpose of the alveoli in the lungs?

    <p>To facilitate the exchange of oxygen and carbon dioxide between the air and blood</p> Signup and view all the answers

    What determines how loud a sound is when you're speaking or singing?

    <p>The amount of air passing over your vocal cords</p> Signup and view all the answers

    Why is the left lung smaller than the right lung?

    <p>To make room for the heart</p> Signup and view all the answers

    Study Notes

    Respiratory System

    • The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide, and also enables making sounds through vocal cords.

    Breathing In (Inhalation)

    • Air can enter the respiratory system through the nostrils or mouth.
    • Air passes through the throat, voice box, and trachea (windpipe) into the lungs.
    • The voice box contains vocal cords that vibrate to produce sound when air passes over them.
    • The lungs have tubes that branch off and get smaller, like twigs on a tree, leading to tiny air sacs called alveoli.
    • Alveoli are covered by tiny blood vessels called capillaries, where oxygen from the air is absorbed into the blood.

    Breathing Out (Exhalation)

    • Breathing out removes carbon dioxide, a gas produced by cells when they use oxygen to create energy.
    • Carbon dioxide moves from the blood into the alveoli, then out of the lungs, through the windpipe, and out of the nose or mouth.

    Automatic Breathing

    • The body breathes in oxygen and out carbon dioxide automatically, without conscious thought.
    • The body can force breathing if it's necessary, making it impossible to hold one's breath for more than a minute or two.

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    Description

    Learn about the organs and parts that control breathing, bringing oxygen into the body and removing carbon dioxide, and how they help us make sounds.

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