What's inside your head? You can find the answer to this question with this school quality human head mode. The 4D Human Head Anatomy Model includes 14 detachable parts and illustrated guide to study the anatomy. This human body 4D puzzle features a transparent cutaway design presenting the inner details of the human head. The 4D Human Head Anatomy Model from Educational Toys Planet is 4.5 inches tall. The human head 4D model comes with the display base. This human body learning set is a great assistance in studying anatomy at home or in the classroom.