title: THE MEDICAL INSTRUMENT--A PHYSIOLOGICAL ANALOGY.
mesh_terms: D002490:Central Nervous System; D002492:Central Nervous System Depressants; D004864:Equipment and Supplies; D009420:Nervous System; D010827:Physiology
chemical_list: D002492:Central Nervous System Depressants
keywords: CENTRAL NERVOUS SYSTEM; EQUIPMENT AND SUPPLIES; NERVOUS SYSTEM; PHYSIOLOGY