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Carina of trachea

Recommended video: Trachea [12:44]
Structures of the larynx, trachea and bronchi seen from an anterior and posterior views.

The carina of the trachea is a cartilaginous projection of the last tracheal ring, found at the bifurcation of the trachea into the left and right main (primary/principal) bronchi. It lies in the sagittal plane and is located in line with the sternal angle, at the level of the fourth thoracic vertebra (T4).

The mucous membrane of the carina contains specialized nervous tissue making it one of the most sensitive areas of the tracheobronchial tree for detecting the presence of foreign bodies and triggering a cough reflex

Terminology English: Carina of trachea
Latin: Carina tracheae
Definition Cartilaginous ridge located at the bifurcation of the trachea into the left and right main bronchi
Function Mucous membrane is sensitive to foreign objects and triggering a couch reflex. 

Learn more about the trachea with this study unit (and article):

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