If by passageways, you mean the bronchi and bronchioles, they're there as a tunnel to supply oxygen from the outside to the lungs.
respiratory bronchioles
E. None of the above.
abnormal chloride channels that trap salt inside cells lining the lung passageways.
the bronchus is one of the major passageways of the lungs that branches off of the trachea.
no a cough clears the lower respiratory passageways. a sneeze clears the upper respiratory passageways
A maze of passageways is called a labyrinth.
that breathing is the lung you has inside
Example sentence - The underground passageways were wet, dirty, and scary.
I had a whoorin spicy curry last night, jeezus did it clear the passageways!
The top of the lung is called the apex. It is the highest point of each lung, located just above the clavicle and extending into the root of the neck. The apex plays a role in the overall function of the lung, allowing for the expansion and contraction needed for breathing.
Surgery is the standard treatment for the earlier stages of non-small cell lung cancer. The surgeon will decide on the type of surgery, depending on how much of the lung is affected.
No, the circulatory system is the system of blood passageways. Passageways that have to do with breathing are parts of the respiratory system.