Helminths (parasitic worms) Flashcards
What are the 3 types of Helminths? Common Name? Body shape?
- Flatworm / Tapeworm….Cestodes…Long ribbon like body
- Roundworms….Nematodes….Cylindrical, unsegmented
- Flatworm / Fluke…Trematodes….Flat ovoid body
“Try Ronnie First”
What are the pieces of Tapeworms?
Head: attaches to intestine = SCOLEX
Body: egg generating segment = PROGLOTTIDS
Taenia Saginata
TAPEWORM
Vector = Undercooked Beef
Taenia Solium
TAPEWORM
Vector = Undercooked Pork
Cysticercosis …Liver, eye, brain
Diphyllobothrium latum !
TAPEWORM
Vector = Contaminated suhi / FISH
Pernicious Anemia (B12 deficiency)
Found MC:
Pacific Salmon = FRESH WATER
Yellow Tail Tuna = SALT WATER
Echinococcus granulosus !
TAPEWORM
Vector = Canine Feces (dog)
Hydatid cysts in Liver and Lung
Shistosoma japonicum ! ! ! ! !
FLUKE
Vector = Snail
Swimmer’s Itch
MCC of death by a helminth worldwide (parasitic worm)
Paragonimus Westermani !
FLUKE
Vector = Crayfish via mouth
LUNG Flu
Clonorchis sinensis
FLUKE
Vector = Raw contaminated fish
Bile Duct - LIVER
Ascaris lumbricoides
ROUNDWORM: Ascariasis
Vector = Oral-fecal
MC roundworm
MC helminthic infection worldwide
Wuchereria bancrofti
ROUNDWORM: Filiariasis
Vector = Mosquitos
Elephantis, lymphatic blockage
Necator americanus
ROUNDWORM: Hookworm
Vector = Fecal contaminated soil
MC hookworm in USA
WEAR SHOES TO PREVENT!!!
Enterobius vermicularis
ROUNDWORM: Pinworm / Threadworm
Vector = Anus-Finger-Mouth
Scotch tape or “Anal Cellophane” test
MC helminth in the US
Itchy Burn
Onchocerca volvulus
ROUNDWORM: River Blindness
Vector = Flies
Africa
Loa Loa
Roundworm: River eye worm
Vector = Flies
“African Eyeworm”
