Abstract: A manikin system for simulating a cardiological patient is disclosed including a stethoscope with a magnet in its head which when placed on the chest of a manikin will close one or more of a number of reed switches disposed beneath the simulated skin causing an associated one of a number of stored, condition-indicating electrical signal sources to communicate the signals to an audio output for producing appropriate condition-indicating sounds. The condition-indicating electrical signals are placed in a set on the tracks of a magnetic tape to correspond to the sounds of a particular disease and the associated switch for each track is disposed at the point on the manikin chest that the particular sounds would be heard on the chest of an actual patient. The blood pressure of the manikin in accordance with the disease may also be treated by the provision of a switch in the arm of the manikin, which is connected in the manner of the chest switches, and by applying a pressure cuff in the clinical manner.