Parasites – Microbiology Test Questions – Flashcards
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Entameba histolytica cyst can have up to four nuclei |
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Entameba Histolytica Trophozoite Causes amebic dysentary ingested cysts in contaminated water trophozoite grow in intestine and burrow into lining cause cramps vomiting and Bloody stool diagnosis find trophozoites in stool |
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Trichomonas Vaginalis Causes Trichomoniasis is an std found in vagina of women and urethra and prostate of men no cyst stage symptoms in women stinging pain and white or yellow or green discharge in men pain in urination diagnosis trophozoites in vaginal smear |
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Guardia Lamblia cyst cysts are ingested and develope into trophozoites in stomach |
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Giardia Lambia Trophozoite causes giardiasis beavers and animals are resevoirs ingest cysts in contaminated water then mature in duodenum attach to intestine wall with suction discs interfer with absorbtion of fats symptoms floating stool and frothy diarrhea diagnosis trophozoites in stool or cysts |
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Trypanosoma Brucei Cause African sleeping sickness animals are resevoirs transmitted by the tse tse fly forms a chancre enters the blood spreads thru blood invade heart and blocks blood vessels causes coma and death |
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Trypanosoma cruzi causes south american sleeping sickness animals are resevoirs the kissing bug bites your lip and defecates and forms a chagoma trypanosomes multiply at chagoma enter blood enter heart cns cause coma and death |
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Plasmodium Sporozoa causes malaria get it from the female anopheles mosquito cause rbc's to burst body cannot recycle iron fast enough symptoms extreme cold followed by a fver an hour later, mild delerium, large amounts od perspiration for 2 to 3 hours, reddish black urine |
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Toxoplasma gondii get it from cats, rodents and birds are hosts in nature ingest sporocysts and they travell all over body and become tachyzoites this organism can cross the placenta If a fetus gets it it can cause still birth, blindness, and mental retardation |
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Taenia solium scolex pork tape worm Taenia saginata similiar but lacks hooks |
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Echinococcus granulosus (hydatid cyst) the most dangerous kind of tape worm dog is the definitive host these cysts will grow all over your body to the size of basketballs can fracture your bones or enlarge the liver diagnosed with a skin test get from kissing dogs |
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D. Latum egg the fish tapeworm human is the definitive host human feces get into water eggs hatch and become coracidium larvae which are eaten by copepods which then are eaten by fish we eat raw fish blocks intestines and takes b 12 from host symptoms anemia diagnosis egges in feces |
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Fasciola hepatica egg cause liver fluke disease larvae go from intestines to liver flukes feed on liver cells and rbc cause liver damage symptoms abdominal pain vomiting diarreah disgnosis eggs in feces get from eating contaminated water cress |
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beef tape worm Taenia Saginata scolex |
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| Taenia Solium Egg |
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| Taenia Saginatum egg |
| Kingdom Anamalia, Phylum Platyhelminthes, Class Cestoda |
| Flat worms, tape worms |
| Beef Tapeworm |
| Taenia saginata |
| What is the life cycle of taenia saginata |
| Humans defenitive host,humans shed eggs and egg filled proglottids,cow eats the eggs,eggs hatch in cow and form cysts in muscle, humans eat cysst,; |
| Pork tape worm |
| Taenia solium |
| What is the difference between pork tape worm and beef tapeworm? |
| With pork tape worm you can get the cysts in your tissue |
| Dog tape worm |
| Echinococcus granuosus |
| What is the pathology of echinococcus granulosus? |
| we get disease from fecal contaminated food, or from dog licking themselves then you, you get large;hydatid cysts in your tissues can fracture bones enlarge liver, |
| What is the life cyle of echinococcus granulosa? |
| Dog is the definitive host, the adult worm lives in the dogs intestine, sheds eggs, herbivores eat the eggs and get hydatid cysts, dog eats the meat of the herbivore |
| Fish Tapeworm |
| Diphyllobothrium latum (D. latum) |
| What is the life cycle of D. latum? |
| Human is the definitive host,Eggs exit feces into water, eggs hatch;into coracidium larvae,larvae eaten by copepods which are eaten by fish, larvae develop in fish muscle which is eaten by human; |
| What is the pathology of D. latum? |
| The;worm obstructs the intestines, takes B12 from host, |
| What is the dianosis of Beef tapeworm? |
| Eggs and proglottids in feces |
| What is the diagnosis of pork tapeworm? |
| Eggs in feces |
| What is the diagnosis of dog tapeworm? |
| Skin test |
| What is the diagnosis of fish tape worm? |
| eggs in feces |
| Kingdom animalia, Phylum Platyhelminthes, Class Trematoda |
| The Flukes |
| What is the life cycle of flukes? |
| Eggs enter water for human feces, Miracidium free swimming larvae enter snails, become sporocysts, cecariae emerge from snail, cecariae either enter intermediate host or attach to plants, they then encyst and become metacercariae which then gets eaten by definitive host |
| Liver fluke disease |
| Fasciola hepatica |
| What is the pathology of liver fluke disease? |
| Larvae get eaten, larvae go from intestine to liver, flukes feed on livr cells and rbc while in liver, cause liver damage and replaces bile duct tissue withfibrous tissue |
| What are the symptoms of Fasciola hepatica? |
| Anemia, Abdominal pain, vomiting, and diarreah |
| What is the diagnosis of Fasciola hepatica? |
| Eggs in feces |
| Chinese liver fluke |
| Clonorchis Sinensis |
| What is different about the life cycle of clonochis sinensis? |
| Fish is an alternate host instead of watercress |
| How do you get Liver fluke disease? |
| Eating watercress |
| Name the shistoma blood flukes |
| S. Mansoni, S. Japonicum, S. Haematobium |
| What is the life cycle of shistoma? |
| Eggs exit into water form feces, Miracidium to snail, sporocysts in the snail, cercariea out of snail and burrow into host |
| Kingdom Animalia, Phylum Nematoda, Class Secernentia |
| Round worms |
| Round worm disease |
| Ascaris Lumbricoides |
| What is the life cycle of ascaris lumbricoides? |
| Adult worms live in human intestine, eggs are released in feces, eggs get on food and water, ingested by humans |
| What is the pathology of Ascaris Lumbricoides? |
| Human swallos eggs hatch in intestines, larvae burrow through mucosa, enter lymph system, goes to bloosd vessels, enters lungs, go up the trachea, then are swallowed and return to intestine. |
| Ascaris lumbricoides symptoms |
| When going through the body can get stuck in tissue and;cause inflamation, can block the intestines, if no males present females will travel |
| What is the diagnosis of Ascaris lumbricoides? |
| eggs in feces, and larvae in sputum |
| Hook worm |
| Necator Americanus |
| What is the pathology of necator americanus? |
| Eggs in feces hatch in dirt, burrow into feet, get into blood vessels, go to luns climb up trachea and swallowed back to the intestines. |
| What are some eymtoms of necator americanus? |
| Loss of appetite, anemia, desire to eat dirt, Heart failure and death |
| What is the diagnosis of necator americanus? |
| Eggs in feces |
| Pin worm |
| Enterobius vermicularis |
| What is the life cycle of Enterobius vermicularis? |
| Live in intestines, female goes to anus at night and lay eggs, kids scratch and sprad eggs, eggs then eaten if hatch around anus will crawl back up. |
| Kingdom Animalia, Phylum Nematoda, Class Adenophorea |
| Trichinella spiralis |
| Trichinella life cycle |
| Eat cysts in undercooked pork, become adults in intestine, give birth to live yong young go thru intestine wall, go to heart and lungs, go to capillaries, become cysts in muscle |
| Trichinella spiralis pathology |
| Penetration of female into intestine, Larval migration, Intramuscular stage causes muclscular pain |
| How do you diagnose trichinella spirellis? |
| Musle biopsy |
| Amebic Dysentery |
| Entameba Histolytica |
| Pathology of Entameba Histolytica |
| Ingest cyst from contaminated water, penetrate intestine lining |
| Symtoms of amebic dysentery |
| Diarrhea and;BLOODY stools |
| Diagnosis of enatameba histolytica |
| Trophozoites in stool |
| Trichomoniasis |
| Trichomonas Vaginalis |
| Pathology of Trichomonas Vaginalis |
| Std, gets in vagina feeds on bacteria an leukocytes |
| Symptoms of Trichomoniasis |
| In women stinging pain, painful intercourse, white or yellow or green discharge, In males pain during urination |
| Diagnosis of Trichomonas vaginalis |
| View trophozoites in vaginal smear |
| Giardiasis |
| Giardia Lamblia |
| Pathology of Giardia Lamblia |
| Ingest cysts from fecal contaminated water, dvelope in duodenum, attach to the intestine wall using adhesive discs, multiply and interfere with absorbion of fats |
| symptoms of giardia lamblia |
| Frothy diarrhea, floating stool |
| diagnosis of giardia lamblia |
| Cysts in the stool, trophozoites better |
| African sleeping sickness |
| Trypanosoma brusei |
| Trypanosoma brucei pathology |
| tse tse Fly bites, forms a chancre, enters bllood, invades heart,cns,coma then;death |
| Diagnosis of Trypanosoma brucei |
| view epimastigotes in the blood |
| South American sleeping sickness |
| Trypanosoma cruzi |
| pathology of trypanosoma cruzi |
| Kissing bug bites lip and defecates, forms a chagoma, enter the blood, go to heart, enters the cns, cause coma and death |
| Diagnosis of trypanosoma cruzi |
| Trypanomastigotes in blood |
| Malaria |
| Plasmodium |
| Vector of malaria |
| Female anapholes mesquito |
| Plasmodium pathology |
| Enters body thru mosquito bite,causes red blood cells to burst body cannot recycle iron fast enough |
| Plasmodium symptoms |
| A feeling of extreme cold followed by a fever an hour later, mild dlerium, large amount of perspiration, and reddish black urine |
| Toxoplasmosis |
| Toxoplasm gondii |
| Pathology of toxoplasm gondii |
| Ingest oocyst from either cat fecal matter or under cooked meat, sporocysts come out in intestine, sporocysts travel to other tissues, sporocysts enter the cells of these tissues and become tachyzoites next become bradyzoites, the host cell bursts release tachyzoites |
| What is different about toxoplasm gondii |
| It can cross the placenta and cause still birth, hydrocephaly, mental retardation and blindness |
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s. mansoni shistoma ova causes blood fluke disease burrow out of snail and into you live in vessels around the intestine |
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s.hematobium schistoma ova blood fluke disease burrow out of snail and into you live in vessels around bladder |
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male and female shistoma female inside |
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ascaris lumbricoides eggs cause round worm disease get from contaminated food and water veggie commoncommon in southern us eggs hatch in intestines then burrow thru lining go thru blood to trachea then climb up throat and down to intestine can block intestine and females will travel to find mate |
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nectar americanus egg hook worms burrow into feet get into blood go to trachea climb up and are swallowed back to intestines symptoms loss of apetite anemia, desire to eat dirt, heart failure and death diagnosis eggs in feces |
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enterobius vermicularis pin worm live in intestines females go to anus at night lay eggs kids scratch spreading eggs people eat eggs symtoms anal itching |
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treichenella spiralis get from undercooked pork humans and pigs are host you swallow; cyst which matures and reproduce and the babies burrow into blood vessels and go to muscle and become cysts cause muscular pain diagnosis is a muscle biopsy |
