1 / 16

Infections Journal

Infections Journal. We have discussed many types of infectious agents from bacteria to viruses to protists . Is there any other disease causing pathogens we have neglected to discuss?. Let’s check out some facts! More than 25% of the worlds population is suffering from helminth infections

gema
Télécharger la présentation

Infections Journal

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Infections Journal We have discussed many types of infectious agents from bacteria to viruses to protists. Is there any other disease causing pathogens we have neglected to discuss?

  2. Let’s check out some facts! • More than 25% of the worlds population is suffering from helminthinfections • Eggs are found in human fecal matter which can contaminate soil in areas where sanitation is poor • The greatest number of cases occur in sub-Saharan Africa, the Americas, China and east Asia • During the adult stage, this parasite bores itself into the hosts’ intestines where it feeds and grows CAN YOU GUESS WHAT HELMINTH MEANS? Helminth parasites!

  3. WORMS!!!

  4. “Helminth” = “worm” • Eukaryotic • Multicelluar • Invertebrates • Bilateral symmetry • w/ tube-like or flattened bodies • Triploblastic – 3 distinct layers of cells General Characteristics

  5. Platyhelminthes (flatworms) subdivided into the Cestoda(tapeworms) and the Trematoda(flukes) 3 Main Types: Nemathelminthes(nematodes) Biodiversity trematode cestode

  6. Long, thin, unsegmented, tube-like bodies • Anterior mouths and longitudinal digestive tracts. Nematodes (roundworms)

  7. Fluid-filled internal body cavity (pseudocoelum) • acts as a hydrostatic skeleton providing rigidity • great and easy way to circulate nutrients Nematodes (roundworms)

  8. Adult worms form separate sexes with well-developed reproductive systems. Nematodes (roundworms)

  9. A Variety of Nematodes (roundworms)

  10. Nematode Infections! QUIZ Nematoda: • Ascaris • Dracunculus • Enterobius • Capillaria • Trichuris • Loa loa • Wuchereria Matching Choices: • Endemic to the Phillipines • The female sex of this organism can make up to 20,000 eggs per day! • Unlike most parasitic helminths, this species is highly prevalent in temperate zones and developed countries. • The largest intestinal roundworm • Passed on by the bite of a deer fly and can be observed nestled in the eye tissue • Very careful to remove worm in its entirety … why? • This parasite infects the lymphatic system of the host and causes swelling of the lower limbs  a disease commonly referred to as elephantasis.

  11. Nematode Infections! QUIZ

  12. Nematode Infections! QUIZ

  13. Nematode Infections! QUIZ

  14. Nematode Infections! QUIZ

  15. Nematode Infections! QUIZ

More Related