Life size. Dissected into 15 parts. The popular school torso is supplied with the following removable parts: Body 1 part Head 2 parts Brain 1part Lung 2 parts Heart 1 part Trachea 1 part Oesophagus 1 part Pancreas 1 part Septum 1 part Liver 1 part Stomach 1 part Intestines 1 part Bladder 1 part