Platyhelminths Flashcards
Characteristics of Helminths
Worm-like
Eukaryote
Multicellular
With digestive, circulatory, nervous, excretory & reproductive systems
Male reproductive organs are in one individuals and female reproductive in other
Dioeocious
One animals has both male and female reproductive organs
Monoecious/Hermaphroditic
Phyla of Parasitic Helminths
- NEMATODES (Roundworm)
- PLATYHELMINTHS (Flatworms)
a. Trematoda (Flukes)
b. Cestode (Tapeworms)
Transmission of Helminths
- Skin penetration
* Necator americanus
* Strongyloides stercoralis - Bites of mosquiro vectors
* Wuchereria bancrofti
* Brugia malayi - Inhalation
* Enterobius vermicularis - Fecal-soil contamination
* Ascaris lumbricoides
* Trichris trichuria
Flat, leaf-shaped bodies with ventral sucker and oral sucker
Trematodes
TF: Trematodes are Hermaphroditic
True
*Except Schistosoma
Schistosoma Spp.
Blood Flukes⭐
Disease caused by Schistosoma spp
Schistosomiasis
Schistosoma mansoni
Intestine
Feces
Liver fibrosis
Lateral spine
Schistosoma japonicum
Intestine
Feces
Liver fibrosis
Rudimentary Lateral spine ⭐
Schistosoma haematobium
Urinary Bladder (Urine)
Hematuria (Egyptian hematuria) ⭐
Terminal spine
Mode of Transmission of Schistosoma
Contact of cercariae (Immature form) into skin
Treatment of Schistosomiasis
Praziquantel
Paragonimus westermani
Lung Fluke
Disease caused by Paragonimus westermani
Paragonimiasis
Transmission of Paragonimus westermani
Ingestion of crustaceans hosts
Effects of Schistosomiasis
- Swimmer’s Itch
- Katayama Fever
- Chronic fibrosis
Fasciolopsis buski
Giant Intestinal Fluke