Uberon definition : This is the point at which the trachea splits into two (left and right) principal
bronchi. It is located in the region of the fourth to sixth intercostal space, though
this varies with species and with respiratory phase. This position closely associates
the bifurcation with the heart base. The thickened median crest initiating the bifurcation
is called the tracheal carina .;
This is the point at which the trachea splits into two (left and right) principal
bronchi. It is located in the region of the fourth to sixth intercostal space, though
this varies with species and with respiratory phase. This position closely associates
the bifurcation with the heart base. The thickened median crest initiating the bifurcation
is called the tracheal carina .