BI-1035
The breathing system
Biology · Secondary 3 · Medium · The breathing system
During inhalation in a healthy adult, which changes occur in the diaphragm and in the volume of the thoracic cavity?
- Diaphragm contracts; thoracic cavity volume increases
- Diaphragm contracts; thoracic cavity volume decreases
- Diaphragm relaxes; thoracic cavity volume increases
- Diaphragm relaxes; thoracic cavity volume decreases
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