part of part of develops from multi-tissue structure pinna antihelix anthelix antihelix of pinna antihelical part of pinna UMLS:C0229308 SCTID:279612003 antihelix (auricula) NCIT:C32120 Wikipedia:Antihelix UBERON:0016466 On the pinna, a curved prominence of cartilage, parallel with and in front of the helix, is called the antihelix, also known as the anthelix; this divides above into two crura, the crura antihelicis, between which is a triangular depression, the fossa triangularis. FMA:60995 auditory hillocks, pharyngeal arch 2 derived