title: The origin of the integrative systems: a change in view derived from research on coelenterates and sponges.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D003063:Cnidaria / Q000166:cytology / Q000502:physiology*; D002479:Inclusion Bodies; D008959:Models, Neurological; D009431:Neural Conduction; D009489:Neurosecretion; D011161:Porifera / Q000166:cytology / Q000502:physiology*