Lumbricus terrestris.

• Model enlarged 25 times
• Model separates into three parts
• On a stand with explanatory notes on the base

The model shows the front third of the body with a cross section in relief: To see the inside of the stomach the intestine can be removed, then all the sexual organs are visible. Finally, the seminal vesicles are removable to show the testes and funnels of sperm ducts.