The intercostal muscles contract, pulling the ribcage up and out. The diaphragm flattens pushing the organs below. The volume of the thorax increases, pressure decreases and air is forced into the lungs.
2 of 5
How do we exhale?
Intercostal and Diaphragm muscles relax, pressure increases, air is forced out of the lungs.
3 of 5
Why are positive pressure breathing systems better than negative pressure breathing systems?
Can be used at home, patient can move around, patients have some control over the machine
4 of 5
Why do we breathe heavier and quicker during exercise?
Muscles respire, so they need more oxygen and they make more CO2 . So gas exchange must be faster.
5 of 5
Other cards in this set
Card 2
Front
How do we inhale?
Back
The intercostal muscles contract, pulling the ribcage up and out. The diaphragm flattens pushing the organs below. The volume of the thorax increases, pressure decreases and air is forced into the lungs.
Card 3
Front
How do we exhale?
Back
Card 4
Front
Why are positive pressure breathing systems better than negative pressure breathing systems?
Back
Card 5
Front
Why do we breathe heavier and quicker during exercise?
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