PPT-HELMINTHS

IntroductionBackground Scientific classifications Nematodes Some species AlumbricoidesNamericanus and Aduodenale 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. The Fungi. The . Fungi. A. Once thought to be plants but the cell wall is made of chitin rather than cellulose and these are not photosynthetic. B. Instead they are saprobic organisms that frequently live off of dead organic matter. Assistant Prof. Dr. . Ahmed A. Mohammed . Lecture 5. Helminths. • . Special adaptations for parasitic mode of life and for species survival are more apparent in the helminths than in the protozoa. . Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. 2. Class: Cestoda (Tapeworms). A- Adult Tapeworm Infections. 1. . Taenia saginata. It is the most common of the large tapeworms of humans. . This parasite causes beef tapeworm infection. . 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 .  . The term . “. Helminths. ”. mean . “worm”. , it is broadly interpreted; it refers to any worm-like animal, in a more restricted sense it refers to a parasitic worm, those comprises two large phyla:. Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. II- Phylum: Nemathelminths or Nematoda. 1. . Ascaris lumbricoides. It is found in the small intestine of man and may be other organs, causes a disease called Ascariasis. The worms also known as the abdominal snake (common name) because it is considered one of the tallest human nematode worms; therefore, sometimes it is also called the large roundworm.. Helminthes are the animals belonging to phyla Platyhelminthes and . Nemathelminthes. .. Soft bodied, . dorso. -ventrally flattened and bilaterally symmetrical. .. Classes. . Trematoda. . Cestoda. 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. Medical Parasitology. Prof. Dr. Ahmed Ali Mohammed. II- Phylum: Nemathelminths or Nematoda. It is commonly known as thread worms. They are unsegmented, typically elongated and cylindrical with a fundamental bilateral symmetry. They have a complete digestive tract, dioecious with few exceptions (the nematodes are usually bisexual, but in a few instances the female may be parthenogenetic).. Helminths. (from the Greek . Helmins. , . meaning worm) include three groups of parasitic worm, large . multicellular. organisms with complex tissues and organs.. Intestinal human nematodes:. Diseases are caused by adult nematodes living in the human gut. . Gh. . . Fajir. . Helminthic. Parasites of Humans . •3 groups of helminthes . •. Cestodes. -tapeworms . •. Trematodes. -flukes . •Nematodes-roundworms . Cestodes. Trematodes. Nematode. Ribbon-like.