title: Excitable membrane--animals.
mesh_terms: D000818:Animals; D002118:Calcium / Q000502:physiology; D002462:Cell Membrane / Q000502:physiology*; D049832:Decapodiformes / Q000502:physiology; D004625:Embryo, Nonmammalian / Q000502:physiology; D007473:Ion Channels / Q000502:physiology; D008564:Membrane Potentials; D011188:Potassium / Q000502:physiology; D012964:Sodium / Q000502:physiology
chemical_list: D007473:Ion Channels; D012964:Sodium; D011188:Potassium; D002118:Calcium