More detailed than the Basic KnowBody", the Advanced KnowBody" separates into the following components: eyeball with extraocular muscles, 4-piece dissectible brain half, left lung with ribs, right lung with ribs (with blood vessels and bronchioles), 2-part heart, liver with gall bladder and diaphragm segment, 2-part stomach, intestine unit, torso and heat unit, and 200 hand-numbered anatomical features. Features a total of 20 dissectible parts. Constructed of tough, pliable, unbreakable plastic. Life-size in true proportion, anatomically accurate, and dissectible into 14 detachable parts. 37" H. Mounted on a hardwood base. KnowBody" torsos carry a lifetime guarantee.