part of part of develops from develops from immediate transformation of organ endocrine system respiratory system digestive system chordate pharynx digestive tract future foramen cecum thyroid primordium epithelium of tongue endoderm-derived structure vestigial structure foramen cecum of tongue cecal foramen of tongue SCTID:368738001 blind foramen of tongue Morand's foramen foramen cecum of tongue ductus lingualis Morgagni foramen Wikipedia:Foramen_cecum_(tongue) MA:0000725 The median pit on the dorsum of the posterior part of the tongue, from which the limbs of a V-shaped furrow run forward and outward; the foramen cecum is the point of attachment of the thyroglossal duct and is formed during the embryological descent of the thyroid gland. FMA:54828 UBERON:0006699 foramen of Morgagni dorsum of tongue