Serotonergic nervous system and the musculature of the turbellarian Monocelis fusca (Rhabditophora, Platyhelminthes) in the region of the brain. Annotated Image

The image of the serotonergic nervous system and the musculature of the turbellarian Monocelis fusca (Rhabditophora, Platyhelminthes) in the region of the brain showing nervous elements in the brain, cell bodies of neurons in the posterior portion of the brain and a pair of lateral anterior nerves running forward from the brain. The image also shows muscle fibers that form the muscular sheath around the brain.