The trachea branches off at the ________ and forms two mainstem bronchi.
A) bronchioles
B) pleura
C) alveoli
D) carina

Question

Quizplus · Accepted Answer

The trachea branches off at the carina, which is a cartilaginous ridge located at the base of the trachea, and forms two mainstem bronchi that lead to the lungs. Bronchioles are smaller branches within the lungs, alveoli are the tiny air sacs within the lungs where gas exchange occurs, and pleura refers to the two-layered membrane that surrounds the lungs.

The Trachea Branches Off at the ________ and Forms Two