The action of opium-alkaloids and expectorants on the ciliary movements in the air passages.
D005100:Expectorants / Q000494:pharmacology*; D006801:Humans; D009068:Movement; D053610:Opiate Alkaloids; D009892:Opium; D012143:Respiratory Physiological Phenomena; D012137:Respiratory System / Q000502:physiology*
D005100:Expectorants; D053610:Opiate Alkaloids; D009892:Opium
EXPECTORANTS/effects; RESPIRATORY TRACT/physiology