Carina of trachea
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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