PPT Slide

Organ Systems of the Platyhelminthes conít

Muscular System

Below the epidermis are layers of circular and longitudinal muscle fibers; used in locomotion

Nervous System

Includes: anterior cerebral ganglia, longitudinal nerve cords, and some lateral nerves

Most free living planarians and parasitic larval forms possess a variety of sensory organs (e.g., eye spots, statocysts, rheoreceptors)