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Unit 2 Air and the Respiratory System

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  • What is this part of the body called?
    windpipe
  • What stops dirt and dust from getting into the body?
    tiny hairs in the nostrils
  • What is the term for "the brain tells the muscles to relax"?
    exhale
  • The parts of our body that help us to breathe form our ___________.
    respiratory system
  • Fill in the blank: Air travels form the windpipe into two ___________.
    breathing / air tubes
  • What are the two main functions of the lungs?
    helps the body to take in oxygen and remove carbon dioxide
  • What does our body need to survive?
    oxygen
  • What is the process of breathing?
    air enters (inhale) and leaves our body (exhale)
  • What are air sacs surrounded by?
    blood vessels
  • Why does the brain send signals to the diaphragm and other muscles?
    to tell those muscles to tighten and make a person breathe in (inhale)
  • What are the different types of gases that air contains?
    nitrogen, oxygen, carbon dioxide, water vapour and other gases
  • What is this part of the body called?
    lungs
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