AUDIO-FREQUENCY MONITOR FOR DEMONSTRATING ELECTRICAL ACTIVITY IN THE HEART.
D000818:Animals; D001296:Audiovisual Aids; D004562:Electrocardiography; D004581:Electronics; D004864:Equipment and Supplies; D006321:Heart; D006329:Heart Conduction System; D012104:Reptiles; D012106:Research
AUDIO-VISUAL AIDS; ELECTROCARDIOGRAPHY; ELECTRONICS; EQUIPMENT AND SUPPLIES; EXPERIMENTAL LAB STUDY; HEART CONDUCTION SYSTEM; REPTILES