microbiology lab practical slides

  1. Image Upload 1
    Enterobius  pinworm

    Adults like these live in the human colon emerging at night onto the perianal skin to mate and lay eggs.

    Humans become infected by injesting these eggs, and symptoms are mostly confinedd to perianal itching and discomfort.
  2. Image Upload 2
    Necator  hookworm

    Historically common in American South other hookworms are found in the tropics and subtropics.

    Adults like these live attached by their mouth parts to the human intestinal wall.

    Heavy hookworm infestation can cause anemia.
  3. Image Upload 3
    Schistoma  Human Blood Fluke

    identify male and female individual

    Found coupled in intestinal blood vessel, liver tissue, and intestinal wall of human (definitive) host.
  4. Image Upload 4
    Trichinella  pork roundworm

    Trichinosis is practically unknown in the US today.  Humans can become infected by consuming under-cooked pork or sometimes bear meat.
  5. Image Upload 5
    Entameba cysts

    Shed in host's feces.

    Entameba trophozoites move by means of pseudopods.  Cysts do not cause entamebiasis symptoms, but are infective when ingested.
  6. Image Upload 6
    Balantidium trophozoite

    • Most abundant in the host's small intestine.
    • Move by cilia.

    Cause the symptoms of balantidiasis.
  7. Image Upload 7
    Leishmania

    Move by flagella.

    Infected by sand fly bites.
  8. Image Upload 8
    Trypanosoma

    Move by flagella.

    Infected by cone-nosed "kissing" bugs.
  9. Image Upload 9
    Trichomonas

    Move by flagella.

    Transmission by sexual intercourse.
  10. Image Upload 10
    Echinococcus

    Scolex - face to neck.

    Canids are the usual definitive hosts; deer and other grazing animals are the usual intermediate hosts.

    Humans occasionally ingest Echinococcus eggs becoming accidental intermediate hosts, cause hydatid disease or cysticercosis due to tissue damage by developing larvae.
  11. Image Upload 11
    Tapeworm eggs

    Shed in the feces of the tapeworm's definitive host, sometimes encased in proglottids.
  12. Image Upload 12
    Mature tapeworm proglottids
  13. Image Upload 13
    Tapeworm cystericercus larva

    Found in the muscle and/or viscera of the worm's intermediate host.
  14. Image Upload 14
    Giardia cysts

    Cysts are shed in host's feces.
  15. Image Upload 15
    Fluke eggs

    Found in water expelled in the feces of an infected host.
  16. Image Upload 16
    Fluke miracidia

    Hatch from eggs.  Found swimming in water until they die or encounter the appropriate host snail.
  17. Image Upload 17
    Fluke Redia

    Found in the body of the appropriate host snail.
  18. Image Upload 18
    Fluke Cercaria

    Found swimming in water after leaving the snail.
  19. Image Upload 19
    Fluke Metacercaria

    Found on aquatic plants (like watercress, cattails, etc).  Remain in this stage until they die or until a suitable definitive host (eg sheep, occasionally humans) eats the plants.
  20. Image Upload 20
    Fluke Adult

    Hermaphroditic, found in the liver and bile ducts of the definitive host.

    The numerous eggs they lay there will be shed in the host's feces.
Author
pccat
ID
272514
Card Set
microbiology lab practical slides
Description
Slides for lab practical in microbiology intro.
Updated