PPT-Helminths I Trematodes Introduction

  The term Helminths mean worm it is broadly interpreted it refers to any wormlike animal in a more restricted sense it refers to a parasitic worm those comprises two large phyla. .. Introduction/Background. Scientific classifications. Nematodes. Some species: . . A.lumbricoides,N.americanus. and . A.duodenale. Morphological properties. Pathogenesis. Epidemiology. Clinical manifestations. Microbiology . with Lab. Denver School of Nursing . – General Education Classes. Lecture / Laboratory : Monday 10:00 am . – . 2:24pm. Lecture: Tuesday 4:30pm . – . 6:30pm. Instructor: Lisa Johansen, PhD Microbiology. Protozoa and Trematodes The incubation period is normally between seven and ten days (range 4 to 28 days) (Hunter 1998). Infectivity The infective dose of oocysts for humans is unknown but probably hepatica. Schistosoma. Fasciola. hepatica. . . large and broadly-. flattened, . . measuring up to . 30 mm long and 15 . mm wide.  . The anterior end is . cone-shaped.. Extensive branching . Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. Introduction to Helminths. The term “Helminths” mean “worms” in parasitology. It refers to the parasitic worms, those comprises two large phyla: Phylum Platyhelminths (flat worms) and Phylum Nemathelminths or Nematoda (true round worms), and two smaller ones: Phylum Nematomorpha (hair snakes) and Phylum Acanthocephala (thorny-headed worms), in addition to one class group from phylum Annelida, the class Hirudinea (Leeches).. . lumbricoides. Morphology:. It . causes: . Ascariasis. .. It’s found in the small intestine of man, and may be in other organs. .. The worm is elongated, cylindrical, and tapers both anteriorly and posteriorly to relatively blunt conical . Alaridah. MD, PhD. Medical . parasitology. is classified into. . Medical helminthology. Medical protozoology. Deals with parasitic worms. Deals with unicellular parasites. 1-Phylum : Platyhelminthes . Authors: Javier Gutierrez Jimenez, J.A. Hernandez-. Shilon. , P. Ramirez-. Cobaxin. Citation: Javier Gutierrez Jimenez, J.A. Hernandez-. Shilon. , P. Ramirez-. Cobaxin. . 2011. Diagnostic structures of intestinal helminths: . Assis.Prof.Dr. . Suhad Faisal . Hatem. . Helminths. (. Trematoda. ). Helminth. :. commonly known as . parasitic worms. , are large . multicellular. organisms, which when mature can generally be seen with the naked eye including . They . are flat, provided with suckers as organ of . attachment.. Trematodes. . are usually leaf shaped, and commonly named as flukes. Fluke means flat body with suckers. .. No . body . cavity.. Reproduction. Helminthes is derived from Greek word “. Helmins. ” meaning “worms”. The term is not correct because it is applied to all elongated invertebrates without appendages and with bilateral symmetry. . Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. B. Larval Tapeworm infection . 1. . Echinococcus granulosus. . This parasite causes a disease called . unilocular. or . cystic. (. hydatid disease. Slackers Facts by Mike . Ori. Disclaimer. The information represents my understanding only so errors and omissions are probably rampant. It has not been vetted or reviewed by faculty. The source is our class notes.. Gh. . Fajir. **Classification of . trematodes. . **. Blood flukes. .. Schistosoma. . haematobium. .. Schistosoma. . mansoni. .. Shsistosoma. . japonicum. Liver flukes. . . Fasciola. hepatica / .