overlaps overlaps pharyngeal arch 2 pharyngeal arch 3 2nd arch pharyngeal cleft EHDAA:613 UBERON:0005873 A groove that is situated between the 2nd and 3rd pharyngeal arch. 2nd pharyngeal groove ectoderm 2nd pharyngeal groove EMAPA:16396 2nd arch branchial groove 2nd branchial cleft branchial groove of 2nd arch VHOG:0000972 2nd arch groove ectoderm VHOG:0000568 EHDAA2:0000057 2nd pharyngeal cleft pharyngeal cleft