High quality Dual sex torso with open back fully represents the anatomy of the complete human upper body. Life size cut away spine showing the head with nasal and buccal cavity half brain eye with optic nerve. Removable female breast with rib insertions heart in 2 parts 2-lung halves liver with gall bladder 2-part stomach large and small intestines with appendix flap opening and cover half of kidney. Male genital organs in 4-parts and female genital organs in 2-parts with embryo in the 3rd month of pregnancy. The back shows the vertebral column spinal cord with nerve endings and the 7th dorsal vertebra is removable. Mounted on a base 14.75 (37.5cm) X 9.5 (24cm). Numbered with English Key Card.