What is the site of bifurcation of the trachea?

The bifurcation of the trachea occurs at the carina, which is the ridge that separates the two primary bronchi where the trachea divides into the right and left main bronchi. This anatomical feature is crucial as it marks the transition from the trachea to the bronchial tree, allowing air to be directed into the right and left lungs. The carina is found at the level of the T5-T7 vertebrae, and it has a distinct shape and structure that serves an important function in the respiratory system. Understanding this location is important for grasping concepts related to respiratory anatomy and the conduct of air through the lower respiratory tract.