Why are the bronchi and bronchioles together called the conducting zone?

Functionally, the respiratory system is separated into a conducting zone and respiratory zone. conducting zone consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. These structures form a continuous passageway for air to move in and out of the lungs.

"do a testcross with a homozygous recessive plant."

no i don't feel that humans have oversubscribed some medications