The respiratory conducting passages are divided into the ________.
A. Upper and lower respiratory tract
B. Posterior and exterior respiratory tract
C. Internal and external respiratory tract
D. Left and right respiratory tract
A?
I agree.
Yes, the correct answer is A. The respiratory conducting passages are divided into the upper and lower respiratory tract.
To arrive at this answer, let's break down the options:
Option B, "Posterior and exterior respiratory tract," is incorrect because there is no "posterior and exterior" division of the respiratory conducting passages.
Option C, "Internal and external respiratory tract," is also incorrect because the division of the respiratory conducting passages is not based on internal and external anatomical boundaries.
Option D, "Left and right respiratory tract," is not correct either. While there are left and right lungs, the division of the respiratory conducting passages is not based on these sides.
That leaves us with option A, "Upper and lower respiratory tract," which is correct. The upper respiratory tract consists of the nasal cavity, pharynx, and larynx, whereas the lower respiratory tract includes the trachea, bronchi, bronchioles, and alveoli.