simionriley2526 simionriley2526
  • 21-06-2017
  • Health
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Contraction of the intercostal muscles and the diaphragm causes the thoracic cavity to ____ and air pressure in the lungs to

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soccerabby11 soccerabby11
  • 21-06-2017
contraction of the intercostals and diaphragm cause  the thoracic cavity to expand, and the air pressure in the lungs to decrease.

this decrease in pressure then pulls in air from outside, thus inspiration occurs. 
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