Biology, asked by khushiargarwal399, 4 months ago


9. When we erhale air, the ribs move upwards
and outwards
​

Answers

Answered by Anonymous
0

Answer:

When you inhale: 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

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