Question
Describe the changes that occurs in the rib-cage and diaphragm during inspiration.
Answer
- Diaphragm flattens;
- External intercostals muscles contract;
- Internal intercostals muscles relax;
- Ribs move upwards and outwards;
- Pressure falls; and volume increases making air to rush into the lungs
- External intercostals muscles contract;
- Internal intercostals muscles relax;
- Ribs move upwards and outwards;
- Pressure falls; and volume increases making air to rush into the lungs
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