title: Ca spike.
mesh_terms: D000200:Action Potentials; D002118:Calcium / Q000494:pharmacology / Q000502:physiology; D002462:Cell Membrane / Q000187:drug effects; D004553:Electric Conductivity; D007448:Invertebrates; D008433:Mathematics; D008564:Membrane Potentials; D009132:Muscles / Q000166:cytology / Q000187:drug effects / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D011188:Potassium / Q000494:pharmacology; D011343:Procaine / Q000494:pharmacology; D013757:Tetraethylammonium Compounds / Q000494:pharmacology; D013779:Tetrodotoxin / Q000494:pharmacology; D014702:Veratrine / Q000494:pharmacology
chemical_list: D013757:Tetraethylammonium Compounds; D013779:Tetrodotoxin; D011343:Procaine; D014702:Veratrine; D011188:Potassium; D002118:Calcium