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Unformatted text preview: as very fine, thin-walled tubules through which oxygen and carbon dioxide can diffuse freely into and out of the tissues. Diagram of insect tracheal system muscle fibres finely branched tracheae (tracheoles) supplying muscle fibres with air main trachea body wall (cuticle) spiracle Cockroach Caterpillar Tracheal supply to muscle tissue spiracles D.G. Mackean...
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This note was uploaded on 11/29/2011 for the course BIO 218 taught by Professor Young during the Fall '11 term at BYU.
- Fall '11