Endotrachea: the inner surface or lining of the trachea: see intima.
Intima: the lining membrane of the trachea: see endotrachea.
Tracheation: the arrangement or system of distribution of trachea.
The stem of the tree or bush becomes the windpipe (trachea).
The forefinger must then be used to distinguish the rings of the trachea.
They clasped me tightly around the trachea, ...