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22 Cards in this Set
- Front
- Back
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Ascaris lumbricoides
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Giant Intestinal Roundworm
-Fecal Oral Route -migrates to lung during life cycle -swallowed after molting in lungs -extremely infectious in humans |
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Necator amaricanus
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Hookworm
-penetrates through skin (feet) -causes severe anemia |
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Enterobius vermicularis
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Pinworm
-Fecal oral route -found in areas of high sanitation -causes pruritis ani -Diagnosis with Graham's Scotch Tape Method |
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Trichinella spiralis
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Tissue Parasite
-ingested contaminated, undercooked pork |
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Dracunculus medinensis
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Guinea Worm
-Drinking contaminated water |
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Toxocara canis/cati
Zoonotic infection |
Dogs/Cats -->humans
-fecal oral route |
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Dirofilaria immitis
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Rarely transmitted to humans
-cats/dogs in warm, tropical climate -mosquito is vector |
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Platyhelminthes
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Flatworms -2 Classes: Trematoda and Clonorchis
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Trematoda
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Flukes-
-nonsegmented -leaf shaped -simple digestive tract -require at least 1 intermediate molluscan host -named after tissue that adult resides in (ex: liver) |
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Name 2 types of Flukes (Trematoda)
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1. Clonorchis sinensis (Chinese liver fluke)
2. Schistosoma (blood fluke) |
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Clonorchis sinensis
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Chinese liver fluke
-snail is intermediate host -then penetrates freshwater fish -humans ingest raw/undercooked, infected fish -Monoecious organism |
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Schistosoma
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Blood Fluke
-snail intermediate host -then humans (or bird) -infection when contact w/ contaminated water -Enlarged liver results from Schistosoma mansoni infection |
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Name 2 types of Tapeworms (Cestoda)
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1. Taenia saginata (Beef Tapeworm)
2. Taenia solium (Pork Tapeworm) |
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Taenia Saginata
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Beef Tapeworm
-cow is intermediate host -more branching of uterus -no hooks in mouth -high prevalence in US |
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Taenia solium
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Pork Tapeworm
-pig is intermediate host -less branching off uterus -4 more suckers plus 2 rows of hooks -prevalence in Mexico and C. America -Cysticercosis-brain cysts |
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Platyhelminthes shape?
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Flat like a piece of paper or a ribbon
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Platyhelminthes-Flatworms
1.Trematoda-flukes a.Clonorchis sinensis (Chinese Liver Fluke) b.Schistosoma (Blood Fluke) 2. Cestoda-Tapeworms a.Taenia saginata (Beef Tapeworm) b. Taenia solium (Pork Tapeworm) |
1.Trematoda-flukes
a.Clonorchis sinensis (Chinese Liver Fluke) b.Schistosoma (Blood Fluke) 2. Cestoda-Tapeworms a.Taenia saginata (Beef Tapeworm) b. Taenia solium (Pork Tapeworm) |
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dioecious
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Male and Female are separate animals
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Monoecious
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both testes and ovaries are in one animal
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Scolex
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Head of the tapeworm
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proglottid
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Body segments of the worm that extend from the head of Tapeworm
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Cysticercosis
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Tissue infection that occuse after exposure to Taenia solium. Has predilection for human CNS system-mimic brain tumor symptom-brain cysts
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