anatomical system integumental system Connected anatomical system that forms a barrier between an animal and its environment. In vertebrates, the integumental system consists of the epidermis, dermis plus associated glands and adnexa such as hair and scales. In invertebrates, the integumental system may include cuticle. Planarian_Anatomy https://orcid.org/0000-0003-2569-1939 | https://orcid.org/0000-0002-7535-4640 UBERON:0002416