Flatworms

Flatworms (Plathelminthes, or Platyhelminthes; from the Greek platys - flat, wide) there is a large division of the class of flatworms (Plathelminthes, lat. Platyhelmínthida).

Among them there are large scolecids, reaching a length of 5–6 m.

They have a thickened dorsal part with antennae and tentacles. The tentacles are outgrowths of the wall of the pharynx, evenly distributed along the length of the entire body. Males are usually smaller than females.

The following human helminths belong to this class: - Schistosoma haematobium - causes schistosomiasis in humans (genitourinary schistosomiasis - bilharzia). This is the causative agent of an endemic disease - urogenital schistomomatosis (bilharzia). The disease is common on almost all continents except Australia. The parasite's ovary holds about 20 - 40 eggs. Infection occurs through water during