Could you survive without lungs?

So can't insects without a tracheal system. Learn about a fascinating part of a fascinating animal. One would never have dreamed that so small a critter might have so complicated systems. The next before you step on one of those guys, or scream with disgust, consider that it is a living organism as complex as a human being.

Learn more about the tracheal system; or about the thin blind ending tubes called tracheoles that supply oxygen to the cells; or about the fine-tuned mechanism of spiracular valves; see the fascinating structure of the filter hairs that protect the tracheal system; or watch some astonishing videos.