Trachea is a common term for an airway through which respiratory air passes in organisms. In vertebrates, it is held open by up to 20 C-shaped rings of cartilage.
Trachea may refer to:
- Vertebrate trachea, in terrestrial vertebrates, such as birds and mammals
- Invertebrate trachea, in terrestrial invertebrates, such as insects and crustaceans
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