Xy-3330 Electronic Model Urine Formation
Provides a section frature of enlarged heart and blood circution diagram.The wall of heart is made of fexible material which can demonstrates the heart beating by the mechanical power behind it.The valves can also show the opening and ciosing,blood circulation is shows by light fash which in red represent arteriees,in blue represent vein,it needs an power supply.
Size(cm):41X17X71cm