Final answer:
The carina is the name of the area where the trachea branches into the right and left bronchi.
Step-by-step explanation:
The area where the trachea divides into the right and left bronchi is called the carina. The carina is a ridge located at the lower end of the trachea that marks the point of bifurcation. This essential anatomical structure serves as the origin of the right and left main bronchi which enter the lungs at the hila. The primary bronchi continue to branch extensively within each lung forming a bronchial tree, which includes progressively smaller bronchi and finally bronchioles ending in alveoli, where gas exchange occurs.