4653059
Beschreibung
Mindmap von Fauzia Ali, aktualisiert more than 1 year ago
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Erstellt von Fauzia Ali
vor mehr als 8 Jahre
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Inspiration & Expiration
- Expiration
- External intercostal muscles
relax pulling ribcage down
and in
- Diaphragm relaxes and
domes upwards
- Thorax volume decreases, so
thorax pressure increases
- Inner pleural membrane moves
inwards pushing on surface of
lungs so alveoli contract
- Atmospheric air pressure
lower than thorax pressure
so air forced out
- External intercostal muscles
relax pulling ribcage down
and in
- Inspiration
- Negative Pressure Inhhalation
- External intercostal muscles
contract raising and pushing
out the ribcage
- Simultaneously,
diaphragm contracts
flattenning it
- Thorax volume
increases, decreasing
thorax pressure
- Inner pleural membrane moves
outwards pulling on surface of
lungs so alveoli expand
- Atmospheric air pressure
higher than thorax pressure so
air forced in
- Negative Pressure Inhhalation
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