呼こ吸きゅう器き系けいMeaningsNoun1. respiratory systemKanji used呼call吸suck器instrument系lineageComposed of呼こ吸きゅう器きrespiratory organsNoun系けいsystem; lineage; group; corollary; system (range of strata that correspond to a particular time period); (taxonomical) seriesNoun