The cerebellum and lungs can be completely removed to show the important structure of the head and inner wall of thoracic cavity. Thorax and abdomen are removable, allowing easy observation of the internal organs while the back is opened and dissected showing the vertebral column, spinal cord, and nerve endings. Further examination of the spinal cord is also possible with the removal of the 12th thoracic vertebrae. Removable parts include cerebrum and cerebellum; eyeball; lung (four parts); heart (two parts); liver; esophagus and thoracic aorta; half of kidney; pancreas, spleen, and duodenum; stomach (two parts); large and small intestine; cecum cover; male and female organ (eight parts); 12th thoracic vertebra with spinal cord; and the torso main body. Unit measures 36" x 17" x 11".