title: Preliminary observations on the functional relationship of the longitudinal and circular layers of the muscularis externa of the rabbit rectum using a flat preparation.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D004558:Electric Stimulation; D006632:Histamine / Q000494:pharmacology; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology*; D010275:Parasympathetic Nervous System / Q000502:physiology; D010388:Pelvis / Q000294:innervation; D011817:Rabbits; D012007:Rectum / Q000502:physiology*
chemical_list: D006632:Histamine; D000109:Acetylcholine