title: Mechanism of penile erection: a neuropharmacologic study.
mesh_terms: D000109:Acetylcholine / Q000502:physiology; D000818:Animals; D001285:Atropine / Q000008:administration & dosage / Q000494:pharmacology; D008297:Male; D018377:Neurotransmitter Agents / Q000502:physiology*; D010413:Penis / Q000187:drug effects / Q000294:innervation / Q000502:physiology*; D051381:Rats; D014294:Trimethaphan / Q000008:administration & dosage / Q000494:pharmacology
chemical_list: D018377:Neurotransmitter Agents; D014294:Trimethaphan; D001285:Atropine; D000109:Acetylcholine