state four differences between inspiration and expiration
Answers
Answer:
During inspiration, the diaphragm contracts and pulls downward while the muscles between the ribs contract and pull upward. ... During expiration, the diaphragm relaxes, and the volume of the thoracic cavity decreases, while the pressure within it increases. As a result, the lungs contract and air is forced out.
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1) Inspiration is when you breathe in!
Expiration is when you breathe out!
2) Inspiration draws fresh oxygen and nitrogen into the lungs where these all important gases that sustain life are then absorbed into the blood stream
Expiration that follows Inspiration releases from the body the gas carbon dioxide as the waste product of the critical energy generating process called metabolism
3) During Inspiration , the diaphragm contrasts and pulls downward while the muscles between the ribs contract and pull upward
During Expiration , the diaphragm releases , and the volume of the thoracic cavity decreases, while the pressure within it increases
4) Air pressure in lungs is less than atmospheric pressure
Air pressure in lungs is higher than atmospheric pressure
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