BFO:0000050 part_of part of RO:0002202 develops_from develops_from processual entity submucosa peripheral nervous system sense organ tube appendage large intestine anatomical wall anatomical structure organ organ part fully formed stage embryo stage part embryo stage larval stage external ectoderm post-embryonic stage blastopore life cycle life cycle stage cleavage stage gastrula stage neuron projection bundle anal canal intestine orifice blastula gut wall mucosa musculature of body material anatomical entity anatomical system multicellular organism organism subdivision acellular anatomical structure anatomical cluster tissue epithelium simple columnar epithelium multilaminar epithelium unilaminar epithelium embryo germ layer ectoderm mesoderm digestive system musculature nervous system central nervous system nerve fasciculus nerve sensory system hindgut anatomical entity smooth muscle tissue wall of large intestine mucosa of large intestine submucosa of large intestine intestinal mucosa wall of intestine intestinal epithelium epithelium of large intestine anal region digestive tract muscle organ striated muscle tissue embryonic structure hypodermis skin of body integument musculoskeletal system somite muscle tissue integumental system epiblast (generic) larva presomitic mesoderm paraxial mesoderm myotome surface structure mesenchyme submucosa of anal canal mucosa of anal canal epithelium of mucosa epithelium of hindgut digestive tract epithelium anatomical conduit mesoderm-derived structure ectoderm-derived structure large intestine smooth muscle intestine smooth muscle gastrointestinal system smooth muscle anal region smooth muscle skin muscle dermomyotome entire sense organ system gastrula archenteron gastrointestinal system mucosa gastrointestinal system epithelium ectodermal part of digestive tract lower digestive tract subdivision of digestive tract organ component layer muscle structure multi cell part structure embryonic tissue alimentary part of gastrointestinal system developing anatomical structure nerve fiber myelinated nerve fiber unmyelinated nerve fiber pharynx statolith statocyst presumptive structure surface groove cleaving embryo adult organism presumptive gut 4 cell stage 8 cell stage appendage musculature epithelial vesicle dense mesenchyme tissue hypodermis skeletal muscle layer mesenchyme of hindgut intestinal submucosa multicellular anatomical structure germ layer / neural crest ecto-epithelium central nervous system cell part cluster organ system subdivision embryonic skin basal layer dermatological-muscosal system columnar epithelium meso-epithelium subdivision of tube integumentary system layer digestive system element anal membrane ectodermal component skeletal muscle organ lateral structure anal canal epithelium smooth muscle layer in fatty layer of subcutaneous tissue transitional anatomical structure developing mesenchymal structure skeletal musculature submucosa of digestive tract sensory organ epithelium external integument structure