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The Arthropod Story Table of Contents   

Respiration: Gotta have oxygen

All animals, including insects, need oxygen. Without it, their cells die. Insects don't have lungs and their "blood" doesn't carry oxygen. Insect cells get oxygen via a direct link to the air outside — a network of tubes, called tracheae let oxygen reach cells deep within the insect.

The network of tracheae in a grasshopper

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