Carina of trachea

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Carina of trachea
Conducting passages. (Carina visible but not labeled.)
Transverse section of the trachea, just above its bifurcation, with a bird’s-eye view of the interior. (Carina visible but not labeled.)
Latin carina tracheae
Dorlands/Elsevier c_11/12215629

In anatomy, the carina is a cartilaginous ridge in the sagittal plane of the trachea where it splits into the two primary bronchi.
Note: the carina is located on the *internal* surface at the point of the tracheal bifurcation.

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Lungs and related structures
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lungs: right, left, lingula, apex, base, root, cardiac notch, cardiac impression, hilum, borders (anterior, posterior, inferior), surfaces (costal, mediastinal, diaphragmatic), fissures (oblique, horizontal)

airway: trachea, carina, bronchi, main bronchus (right, left), lobar/secondary bronchi (eparterial bronchus), segmental/tertiary bronchi (bronchopulmonary segment), bronchiole, alveolar duct, alveolus

pleurae: parietal pleura (cervical, costal, mediastinal, diaphragmatic), pulmonary pleura, pulmonary ligament, recesses (costomediastinal, costodiaphragmatic)