part_of part of part of has developmental contribution from has developmental contribution from cranial neural crest embryonic tissue dense mesenchyme tissue pharyngeal arch system entire pharyngeal arch associated mesenchyme EMAPA:16550 XAO:0004524 UBERON:0010046 EHDAA2:0001459 pharyngeal arch associated mesenchyme entire branchial arch associated mesenchyme uberon The sum total of mesenchymal tissue in the pharyngeal arch region. Pharyngeal mesenchyme is undifferentiated, loose connective tissue derived mostly from mesoderm, and also contains ectodermally derived neural crest cells. associated mesenchyme of pharyngeal region