The infection is called Bronchitis. I don't get why this wasn't answered before because I'm in fifth grade and I know this stuff.
Bronchitis
They terminate at the alveolar sacs which contain the alveoli. Here inhaled O2 is exchanged for exhaled CO2 via the pulmonary veins (which transport de-oxygenated blood with CO2), to the pulmonary...
It is called the trachea (tray-key-a)
They allow air to reach the lungs they are a passage way for oxygen from your mouth to other parts of your body