immediately deep to in taxon composed primarily of Chordata submucosa http://upload.wikimedia.org/wikipedia/commons/4/4e/Ens.png http://upload.wikimedia.org/wikipedia/en/thumb/4/4e/Ens.png/200px-Ens.png BTO:0002107 submucous layer A layer of dense irregular connective tissue that lines organs and supports the mucosa, as well as joins the mucosa to the bulk of underlying smooth muscle. [WP,unvetted]. submucosa of organ submucosal tela submucosa FMA:85391 NCIT:C13167 FMA:85392 tunica submucosa region of submucosa UMLS:C0225344 SCTID:68439008 Wikipedia:Submucosa submucosa of region of organ UBERON:0000009 organ submucosa mucosa connective tissue organ component layer