Gas exchange in insects
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Last updated 5:25 PM on 5/13/25
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5 Terms
1
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Spiracles
valves where CO2 leaves and O2 enter via diffusion in an insect
2
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Trachea
Tubes which lead off from the spiracles and branch off into tracheoles
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Tracheoles
have thin walls and are branched meaning oxygen diffuses directly into respiring cells
insect circulatory system does not carry oxygen
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how insects move air in and out of the spiracles
by pumping their abdominal
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Purpose of spiracles valves closing
reduces water loss
Note 
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