| In some flatworms, the process of cephalization has included the development in the head region of light-sensitive organs called ocelli. |
| The initial studies involved little flatworms called planaria that have a very primitive nervous system. |
| The larvae of flatworms burrowing into your skin cause this nasty little disease! |
| Feeding flatworms extend a long pharynx out of their mouths. This tube leads directly into the digestive tract. |
| The planarians used in these studies, also called flatworms, live in fresh water and have a singular ability to regenerate. |
| Figure 1 presents the results for the schistosomes, and differences between these and other parasitic flatworms are given below. |
