Question

Give the structure of a trachea.

Answer 1

Structure of Trachea: It is a long thin air tube about 11 cm long and 2.5 cm broad. Its wall is semi-transparent and composed of 4 layers-

1. Mucosa
2. Submucosa
3. Cartilaginous layer
4. Adventitia

The trachea in the thoracic region bifurcates into two short tubes called primary bronchi which enters into the lungs.