Do intercostal muscles contract or relax when we breathe.

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asked Aug 3, 2022 35.8k views

1 Answer

Joshua Burgner · Answer 1 · 2022-08-10T04:10:54+0000

Answer:

the internal intercostal muscles relax and the external intercostal muscles contract, pulling the ribcage upwards and outwards. the diaphragm contracts, pulling downwards. lung volume increases and the air pressure inside decreases.

Step-by-step explanation:

Do intercostal muscles contract or relax when we breathe.

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