Helminthes Flashcards
Life cycle of the Strongyloidiasis
1) Filariform larvae penetrate skin
2) Migration to lungs hematogenously
3) Enter into the alveoli and travel up the bronchial tree to the pharynx
4) Larvae swallowed and develop into adults in the intestine
5) Adults lay eggs
6) Eggs hatch, become rhabditiform larvae
7) Excreted in stool
Parasite that migrates out of the anus at night to deposit eggs surrounding perianal folds
Enterobius vermicularis (pin worms)
How are the following parasites obtained:
1) Ascaris lumbricoides
2) Necator americanus (hook worm)
3) Strongyloides stercoralis
4) Trichinella spiralis
5) Enterobius vermicularis
1) Ingestion of egg
2) Larvae penetrate through skin
3) Larvae penetrate through skin
4) Ingestion of larvae
5) Ingestion of egg
Parasitic intestinal infection that causes anemia due to sucking of blood from the instestinal walls
1) Necator americanus (hook worm)
Threadlike adult roundworm that pokes a loop of body through the skin, exposing the uterus
Dracunculus medinensis
Cause of River blindness and hyperpigmented skin
Onchocera volvulus
Blockage of lymphatic vessel that results in swelling of the legs and genitals. What is this? What is the cause?
1) Elphantitis
2) Wuchereria bancrofti
What tape worm can cause vitamin B12 deficiency
Diphyllobothrium latum
What tape worm causes hydatid cysts in the liver?
Echinococcus granulosus
What parasitic infection can lead to squamous cell carcinoma of the bladder?
Schistosoma haematobium
Parasitic infection that causes cholangiocarcinoma
Clonorchis sinesis
Brain cyst and seizures caused by a parasite
Taenia solium
Liver cysts caused by a parasite
Echinococcus granulosus
Vitamin B12 deficiency caused by parasite
Diphyllobothrium latum
Biliary tract disease or cholangiocarcinoma caused by parasite
Clonorchis sinesis
