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Study
Respiratory System
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What is inhalation?
breathe in air (lungs get bigger)
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Air travels down the ____ to the lungs
windpipe
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Does our body need carbon dioxide?
no
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What is not used in respiration? A) Lungs B) Esophagus C) Pharynx
B) Esophagus
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During exhalation, we breathe out ________.
carbon dioxide
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Blood carries oxygen to our ____
organs
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What is exhalation?
we breathe out (lungs get smaller)
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During inhalation, we breathe in ______.
oxygen.
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What are alveoli?
millions of small air sacs where gas exchange occurs
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Gas exchange happens in the _____
alveoli
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What is this?
lungs
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What are the two important processes of respiration?
1) the process of Inhaling and exhaling air 2) the process of exchanging two gases (oxygen and carbon dioxide)
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