has quality has quality capable of capable of peristalsis Ciona tubular tube vessel primary circulatory organ peristaltic circulatory vessel peristaltic heart ANISEED:1235302 A vessel down which passes a wave of muscular contraction, that forces the flow of haemolymphatic fluid. BSA:0000063 See http://www.ncbi.nlm.nih.gov/pubmed/20235196 for discussion of whether embryonic vertebrate heart is peristaltic BSA:0000088 UBERON:0015227