A set of 5 models designed to compliment the "Illustrated Adventure in Human Anatomy" book. Also great to use on their own. Includes: life-size 2-part heart, a 3x life-size 4-part ear, a 3x life-size 8-part eyeball, a head with 8-part brain, and a 16 1/2" tall skeleton. All models measure 5"x 6".