This regular ╛ life size muscular arm 6-part arm model illustrates both the superficial and deeper muscles, five of which are removable from the muscled arm. Tendons, vessels, nerves and bone components of the left arm and shoulder are shown in great detail on this high quality muscle model. Parts numbered on muscled arm for easy identification of parts. Now included with all 3B Scientific Anatomy models is the 3B Smart Anatomy app. This app allows users to register their 3B item to extend the warranty from 3 to 5 years plus free 1 year access to the 3B Smart Anatomy app which includes 23 Anatomy lectures, 117 interactive models and 39 quizzes.