At which structure does the trachea split into the right and left main bronchi?

• A. Carina
• B. Larynx
• C. Trachea
• D. Esophagus

Answer: (A)

The split of the trachea into the right and left main bronchi occurs at the carina. The carina is a cartilaginous ridge at the inferior end of the trachea where it bifurcates, directing airflow into each lung. It’s also one of the most sensitive regions of the airway, often triggering a cough when stimulated. The larynx sits above the trachea, and the esophagus sits behind it, so neither is involved in where the trachea divides.