At what point does the trachea branch into two main stem bronchi?
a. Carina
b. Cricoid cartilage
c. Glottis
d. Manubrium
ANS: A
At the base of the trachea, the last cartilaginous ring that forms the bifurcation for the two bron-chi is called the carina. The carina is an important landmark that is used to identify the level at which the two main stem bronchi branch off from the trachea.
Health Professions
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