164060
Gas Exchange
- Keywords
- Ventilation
- Bringing in fresh air &
removing stale air.
- Maintaining concentration gradient
- Bringing in fresh air &
removing stale air.
- Gas Exchange
- Process of swapping one gas
for another
- Occurs in alveoli - where there
are capillaries & tissues
- Process of swapping one gas
for another
- Respiration
- The production of ATP
- Occurs in the cytoplasm
& mitochondria of cells
- The production of ATP
- Ventilation
- The Mechanics of breathing
- Breathing in ( Inspiration)
- External intercostal muscles
contract
- Ribs move upwards & outwards
- Ribs move upwards & outwards
- Diaphragm contracts &
moves down
- Volume in chest increases
- Air rushes into lungs & they inflate
- Pressure decreases lower than
atmospheric pressure
- External intercostal muscles
contract
- Breathing out (Expiration)
- External Intercostal
muscles relax
- Ribs move downwards &
inwards
- Ribs move downwards &
inwards
- Diaphragm relaxes &
moves upwards
- Volume in chest decreases
- Air rushes out of lungs & they
deflate
- Pressure increases higher than
atmospheric pressure
- External Intercostal
muscles relax
- Breathing in ( Inspiration)
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