Ventilation in insects mindmap
- Created by: efg150
- Created on: 26-03-21 15:48
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- Ventilation in Insects
- Tracheae
- Microscopic air-filled pipes
- Spiracles
- Air moves into the tracheae through pores on the insect's surface called spiracles
- Oxygen travels down the conc. gradient towards the cells.
- Carbon dioxide from the cells moves down its own conc. gradient towards the spiracles to be released into the atmosphere.
- Tracheoles
- The tracheae branch off into smaller tracheoles.
- Thin, permeable walls and go to individual cells.
- Contain fluid, which oxygen dissolves in.
- The oxygen then diffuses from this fluid into body cells.
- Carbon dioxide diffuses in the opposite direction.
- The oxygen then diffuses from this fluid into body cells.
- Rhythmic abdominal movements
- Insects use this to change the volume of their bodies and move air in and out of the spiracles.
- When larger insects are flying, they use their wing movement to pump their thoraxes too.
- Tracheae
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