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Active breathing in insects
The Scientist 2005, 19(4):24
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Rather than rely solely on passive diffusion, insects use discontinuous patterns of gas exchange to avoid the toxic effects of oxygen, according to researchers at the University of California, Irvine. The peculiar type of breathing exhibited by some insects is a cyclical pattern of opening and closing the spiracles, the apertures that connect the respiratory tracheal system with the exterior.[1]
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