Planaria Anatomy

Planaria are common to many parts of the world living in both saltwater and freshwater ponds and rivers. Transmembrane protein involved in the formation of channels permeable to ions and small molecules.

13 Things You Didn T Know About Planarians Mental Floss

Planaria is the name of one genus but the name planarian is used to designate any member of the family planariidae and related families.

Planaria anatomy. Planaria are commonly called flatworms and many species can be found in many different environments. Most planarians occur in fresh water and are sometimes seen in large masses. Planaria exhibit an extraordinary ability to regenerate lost body parts.

A planarian is one of many flatworms of the class turbellaria. Anatomy of a flatworm. Anatomy of the planarian characteristics brain ganglia planarian can process information about their environement pharynx used for suckling food in the mouth is at the end of the pharynx eyespot simple eye can detect light.

For example a flatworm called giardia is a common parasite found in contaminated drinking water that if consumed can cause diarrhea and severe dehydration. Red planaria are flatworms that can damage coral reefs in. But the mouth and pharynx or the muscular tube that draws food in from the mouth are projected from the middle of the flatworms body.

Planaria are carnivorous bottom feeders and like any good bottom feeder their mouths are located at the underside of their body. This organ does not contain neoblasts and therefore pharynx regeneration and cell renewal depends on the entry of neoblasts from the mesenchyme. Some species are terrestrial and are found under logs in or on the soil and on plants in humid areas.

Circular and longitudinal fibers are found beneath these 2 epithelia which are also connected by radial muscle fibers bueno et al 1997ab. Some species are marine others are terrestrial. For example a planarian split lengthwise or crosswise will regenerate into two separate individuals.

The digestive system of planarian worms is quite simple. The planarian pharynx is a muscular tube delimited by external and internal monostratified epithelia.

Planaria 渦蟲 O School Anatomy Human Development