Muscles control the ventilation of the lungs during breathing. Which row shows what they do during inspiration of air?
- Adiaphragm muscles contract; external intercostal muscles contract; internal intercostal muscles relax
- Bdiaphragm muscles contract; external intercostal muscles relax; internal intercostal muscles contract
- Cdiaphragm muscles relax; external intercostal muscles contract; internal intercostal muscles relax
- Ddiaphragm muscles relax; external intercostal muscles relax; internal intercostal muscles contract