short Meckel's cartilage reduced Meckel's cartilage length truncated mandibular cartilage decreased Meckel cartilage length reduced mandibular cartilage length reduced Meckel cartilage length MP:0013933 truncated Meckel's cartilage decreased mandibular cartilage length truncated Meckel cartilage decreased Meckel's cartilage length length reduction or truncation of the cartilage bar in the mandibular arch that forms a temporary supporting structure in the embryonic mandible and gives rise to middle ear bones and sphenomandibular and anterior malleolar ligaments short mandibular cartilage short Meckel cartilage small Meckel's cartilage decreased length of Meckel's cartilage