overlaps overlaps pharyngeal arch 3 pharyngeal arch 4 pharyngeal pouch pharyngeal pouch 3 3rd branchial pouch third visceral pouch visceral pouch 3 pharyngeal pouches 3 3rd arch branchial pouch endoderm UMLS:C0231070 ZFA:0001131 NCIT:C34311 third pharyngeal pouch VHOG:0001030 TAO:0001131 EHDAA2:0000077 VHOG:0000966 Wikipedia:Pharyngeal_pouch_(embryology)#Third_pouch EMAPA:16586 third arch pharyngeal pouch RETIRED_EHDAA2:0000076 AAO:0011116 3rd pharyngeal pouch endoderm A conserved feature of all vertebrate embryos is the presence of a series of bulges on the lateral surface of the head, the pharyngeal arches; it is within these structures that the nerves, muscles and skeletal components of the pharyngeal apparatus are laid down. The pharyngeal arches are separated by endodermal outpocketings, the pharyngeal pouches.[well established][VHOG] A pouch that is situated between the 3rd and 4th pharyngeal arch. [ISBN:0124020607][VHOG] SCTID:345450001 The third pouch possesses Dorsal and Ventral wings. Derivatives of the dorsal wings include the inferior parathyroid glands, while the ventral wings fuse to form the cytoreticular cells of the thymus. The main nerve supply to the derivatives of this pouch is Cranial Nerve IX, glossopharyngeal nerve UBERON:0007124 EFO:0003634 Third of the pharyngeal (endodermal) evaginations between the visceral arches from which the Eustachian tube is derived; pouches 2-4 open as gill slits.[AAO] UBERON:0005716 A pharyngeal pouch that between pharyngeal arches 3 and 4. FMA:295682 3rd arch branchial pouch XAO:0000251