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Micro Helminths para

QuestionAnswer
Fasciola hepatica -(sheep liver fluke). Infection by eating watercress and water caltrop nuts with metacercariae. Snail is intermediate host. Lives in human bile duct.
Clonorchis sinensis (Chinese liver fluke). Infection by eating raw infected fish. Definitive hosts: this species infects a variety of fish eating mammals, including humans, swine, canids, felids, rodents, lagomorphs, camelids.
Fasciolopsis buski (giant intestinal fluke). Infects duodenum of host. Largest intestinal fluke of humans. Definitive hosts: this species infects swine and humans. Site of infection: small intestine. Distribution: Orient
Schistosoma (schistosomes) a. S. japonicum b. S. mansoni c. S. haematobium
S. japonicum -(Oriental blood fluke)-adults in venous plexuses of intestine. Eggs passed in feces.
S. mansoni adult in venous plexuses of colon and lower ileum or portal system of humans. Eggs passed in feces. Definitive hosts: primates and some rodents
S. haematobium in urinary bladder, eggs passed in urine.
Paragonium westermani Oriental lung fluke. Get by eating raw crabs or crayfish. Adults in human lungs.
Phylum Platyhelminthes Flatworms Class Trematoda (flukes) Class Cestoda (tapeworms)
Phylum Nematoda (roundworms). T. trichiura N. americanus A. duodenale E. vermicularis Toxocara sp. Haemonchus contortus
Ascaris lumbricoides (pig roundworm)-but can infect humans in lungs
Trichinella spiralis Encysted in skeletal muscle. Get from poorly cooked or raw pork. Definitive hosts: this species infects a wide variety of mammals, including humans; carnivores and scavengers are most commonly infected
Wuchereria bancrofti causes elephantiasis by filiarial worms found in blood of human host. Vector is mosquito.
Enterobius vermicularis (pinworm)-a fairly common parasite of children. Autoinfection by swallowing eggs, no intermediate host.
Onchocerca volvulus (eye worm)-microfiliariae in blood film. Black fly is vector
Loa loa eyeworm)-microfilariae in blood smear. Causes loaisis. Definitive host = usually human, some African primates too. Vector = mango fly, Chrysops sp. Distribution: Africa and India.
Dracunculus medinensis (Guinea worm)-humans get infected from drinking unfiltered water with Cyclops crustaceans. Adult is wound up on a stick from ulcer on human body.
Class Trematoda Flatworms. C. sinensis F. hepatica F. buski P. westermani S. hematobium S. mansoni S. japonicum
Class Cestoda Tapeworms D. latum T. saginata, T. solium H. nana H. diminuta D. caninum E. granulosus
Phylum Arthropoda Class Acari (mites and ticks) Sarcoptes scabiei (scabies mite) Dermatophagoides pteronyssinus (House Dust mite) Ixodes dammini/ I. scapularis Amblyomma americanum (Lone Star tick) Rocky Mt. spotted fever tick (Dermacenter variabilis Argas persicus Rhipicephalus sanguineus
Phylum Arthropoda, Class Arachnida, Order Trombidiformes Demodex folliculorum (face mite
Phylum Arthropoda, Class Arachnida, Order Sarcoptiformes Sarcoptes scabiei
Phylum Arthropoda, Class INSECTA, Order Phthiraptera, Family Pediculidae (lice Pediculus humanus humanus (human body louse) Pediculus humanus capitus-(head lice) Phthirus pubis (crab or pubic louse Hematopinus eurysternus Trichodectes canis-(canine chewing louse
Order Siphonaptera (fleas) Pulex irritans (human flea Xenopsylla cheopis (oriental rat flea Ctenocephalides sp. (canis and felis)-
Order Diptera (flies) Culex sp. (mosquito)- Glossina sp. (tsetse fly)- Melophagus ovinus (sheep ked)-
Order Hemiptera (true bugs) Triatoma sp. (Assassin or kissing bug)- Cimex lectularius - (bedbug
Created by: halderman
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