دراسة متعامد الزوايا المنتظم Orthogonal للجهاز العصبي في الدودة الشريطية Amphicotyle heteropleura(Eucestoda:Pseudophyllidea,Triaenophorridae)

Abstract

This study reveals the orthogonal structure of Amphicotylo heteropleura cestode tapeworms by using the enzymatic method with (Achi) technology. The results show that the cholinergic compound for regular orthogonal consist of two pairs of brain ganglia which are located the revoluted elongated head with associated organs like posterior ring which is similar to the accessory sucker, in addition to the apical disc. On of this posterior long cerebral ganglia located near the cestoda body characterized with its elongated shape , arise from it two pairs of thick lateral nerve trunks, the other is anterioly located arise from it five pairs of thin median nerves and four pairs of lateral nerve cords. Thick nerve trunks, lateral nerve cords , and thin median nerves are connected together by a number of transverse commissures , which are different in number according to the number of body segments. Moreover, this study reveals the distribution of posterior lateral ganglia along the thick lateral nerve trunks, lateral nerve cords and thin median nerves. This cestode is characterized by appearance of nerve net in each segment that ends by sensory ganglia which have a good reaction to (Achi) technology, this net extends to the borders of the body , the cholinergic components extended deeply into the tissues of the reproductive organs and other functional units to supply it with nerves and to make a nerve mechanism to continue its life.