Physiological Skeleton, most flexible skeleton. Natural motion, with a flexible spine, a spinal cord with nerve ends, artery, a herniated disc and a sectioned sacrum with a bony flap to see the nervous course, The upper & lower limb, hand, feet, are elastic cord mounted
Super-Skeleton, combines all skeleton features in just one skeleton, a flexible spine and comes with spinal cord, nerve ends, spinal artery and herniated disc, approximately 500 painted and labeled muscle origins in red colour and muscle insertions in blue colour