part of part of has developmental contribution from has developmental contribution from organ part pharyngeal arch 3 dorsum of tongue posterior part of tongue NCIT:C12228 base of tongue The Posterior tongue, or pharyngeal part, is the part of the tongue behind the terminal sulcus. At its root, it is directed backward, and connected with the hyoid bone by the Hyoglossi and Genioglossi muscles and the hyoglossal membrane; with the epiglottis by three folds (glossoepiglottic) of mucous membrane; with the soft palate by the glossopalatine arches; and with the pharynx by the Constrictores pharyngis superiores and the mucous membrane. It is derived primarily from the third pharyngeal arch. (The second arch has a substantial contribution during fetal development, but this later atrophies. The fourth arch may also contribute, depending upon how the boundaries of the tongue are defined.). radix linguae SCTID:362094001 posterior part of dorsum of tongue pars posterior (dorsum linguae) base of the tongue posterior third of tongue pharyngeal portion of dorsum of tongue posterior 1/3 of the tongue pharyngeal part of the tongue postsulcal part of dorsum of tongue Wikipedia:Posterior_tongue MA:0003031 pars postsulcalis (dorsum linguae) pharyngeal part of tongue UBERON:0010033 FMA:54645