854875
Description
Mind Map by Freya Bolton, updated more than 1 year ago
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Created by Freya Bolton
almost 11 years ago
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Gaseous Exchange
- Inhale
- The ribcage expands
outwards and upwards
- The diaphragm
contracts and pulls down
- Pressure inside the chest is lowered
and air is sucked into the lungs
- The ribcage expands
outwards and upwards
- Exhale
- The ribcage drops inwards and downwards
- The diaphragm relaxes,
moving back upwards
- Pressure inside the chest
increases and air is forced out
- The ribcage drops inwards and downwards
- Alveoli Features
- Large surface area
- Single cell wall
- Lots of tiny blood vessels
called capillaries
- Large surface area
- Diagram:
Media attachments
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