Zusammenfassung der Ressource
The Lungs
- When you breathe in your lungs expand because ;
- Your diaphragm contracts
and moves down so that
the new oxygen can fill
the lungs
- Your intercostal muscles (the muscles
between your ribs )are contracting to lift
your ribs up and outwards
- When the muscles in your thorax relax this means you are brething out
- Breathing in increases the size of your thorax