Abstract: A method and apparatus for simulation of conditions under which endoscopic procedures may be practiced by an individual to learn and improve on the skills of manipulation and use of instrumentation and to develop the manual dexterity required. The apparatus has a cavity in which an object simulating a human organ is mounted for performing the practice procedure. The cavity is closeable to outside view or access thus forcing the individual practicing a procedure to use and manipulate the instruments under conditions that mimic real life operating and diagnostic conditions.