閉へい鎖さ血けっ管かん系けいMeaningsNoun1. closed blood-vascular systemKanji used閉closed鎖chain血blood管pipe系lineageComposed of閉へい鎖さclosing; closure; shutdown; lockoutNoun血けっ管かんblood vessel; veinNoun系けいsystem; lineage; group; corollary; system (range of strata that correspond to a particular time period); (taxonomical) seriesNoun