Question

the respiratory passages that lead directly from the trachea into the lungs are the left and right________
o tracheae
o alveoli
o bronchioles
o primary bronchi
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Explanation:

The trachea divides into the left and right primary bronchi, which are the main passageways into the lungs. Tracheae is the plural of trachea. Alveoli are the tiny air - sacs in the lungs where gas exchange occurs. Bronchioles are smaller branches that come after the primary bronchi.

Answer:

primary bronchi