human_reference_atlas has part fibroblast Homo sapiens anal canal ileocecal valve rectum caecum vermiform appendix ascending colon transverse colon descending colon sigmoid colon organ component layer subserosa subserosa AS UBERON:0012375 Wikipedia:Subserosa A layer of tissue between the muscularis and serosa. NCIT:C94494 Contains nerves, blood vessels, lymphatics and lymph nodes FMA:45636 SCTID:2255006 subserosa UMLS:C0225334 uberon splenic flexure of colon hepatic flexure of colon