trachea

A thin-walled, cartilaginous tube descending from the larynx to the bronchi and carrying air to the lungs.

One of the internal respiratory tubes of insects and some other terrestrial arthropods, which are connected to the spiracles and are used for gas exchange.

A tracheary element.

A notable genus of noctuid moths, containing one species, T. piniperda, known to English collectors as the pinebeauty.

In anatomy and zoäl.: The principal air-passage of the body; the windpipe, beginning at the larynx and ending at the bronchial tubes. In Arthropoda, as insects, one of the tubes which traverse the body and generally open by stigmata upon the exterior, thus bringing air to the blood and tissues generally, and constituting special respiratory organs.

In botany, a duct or vessel; a row or chain of cells that have lost their intervening partitions and have become a single long canal or vessel.

The windpipe. See Illust. of Lung.

One of the respiratory tubes of insects and arachnids.

One of the large cells in woody tissue which have spiral, annular, or other markings, and are connected longitudinally so as to form continuous ducts.

A thin-walled, cartilaginous tube connecting the larynx to the bronchi; the windpipe.