develops from ends during starts during death mandibular head muscle m. levator mandibulae longus profundus mlmlp eriksegerdell Muscle that is part a complex that arises from the skull roof and acts to elevate or close the lower jaw. After separating from levator mandibulae longus superficialis, it parallels it and inserts in the connective tissue. Only at later stages, its rostral third is slightly curved laterally and inserts in the region of the anlage of the tentacular cartilage. XAO:0004329 xenopus_anatomy 2012-05-05T05:15:00Z m. levator mandibulae longus profundus primordium NF stage 41