digestive system PMID:27068018 Planarian_Anatomy PMID:22451003 PMID:24922054 PMID:18287199 ISBN:9780070316607 PMID:19766622 PMID:17390146 PMID:15866156 PMID:20707997 PMID:20215344 PMID:26556349 PMID:19933103 PMID:23079596 Anatomical system that has as its parts the organs devoted to the ingestion, digestion, and assimilation of food and the discharge of residual wastes. PMID:17553481 PMID:19247960 gastrovascular system PMID:27501047 PMID:25558068 PMID:21356107 PMID:22479207 PMID:21806978 PMID:24737865 gastrointestinal system https://orcid.org/0000-0003-2569-1939 | https://orcid.org/0000-0002-7535-4519 PMID:29357350 PMID:20040488 PMID:16344473 PMID:18063757 PMID:16311336 PMID:21664348 PMID:19048075 PMID:25254346 PMID:17905225 UBERON:0001007 anatomical system