Human Open Back Torso Model Dual Gender, 27 PartsLife size Dual Sex Excellent detail 33 inches tall Life size human torso is an excellent tool for anatomy studies. It features a dissected head to show nasal cavity, internal structures of the mouth and eye. Left half of brain can be taken out and is in four parts to show excellent detail. Lungs with attached ribs and 2 part heart come out to show internal detail. Liver with gall bladder, 2 part stomach, and large and small intestine, with appendix