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90 Cards in this Set
- Front
- Back
long pharynx
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Trichuris
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Adults in rectum and colon
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Trichuris
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Embryonation in soil for 21 days
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Trichuris
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J1 in Crypts of Lubricyne
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Trichuria
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Warm, wet, shady climate
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Trichuria
Family Anclostomidae |
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Causes prolapses
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Trichuria
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Adults mature in 21 days
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Trichuria
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Parasitic to all parts of the body
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Capillaria
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Where is Capilaria hepatica found
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liver of rodents
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What is the infected stage of capillaria?
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feces
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What is the paratenic host for capillaria hepatica
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cats or dogs
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What does capillaria hepatica cause?
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Jaundice
Scar tissue to parenchyma |
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intestines of Philippeans
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C. Philippensis
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lungs of cats and dogs
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C. aerophila
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commercial fox farms
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C. aerophila
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Crop of chickens and turkeys
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C. annulata
C. caudinflata |
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What's the intermediate host of C. annulata and C. caudinflata?
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Earthworm
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smallest nematode of humans
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Trichinella spiralis
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Temperate zones
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Trichinella spiralis
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Widely spread-possibly cosmopolitan
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Trichinella spiralis
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Tropical
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Trichinella nelsoni
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Arctic
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Trichinella pseudospiralis
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First found in racoons
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Trichinella pseudospiralis
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Where is Trichinella adults found
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WOVEN/THREADED in intestine
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Where are the eggs laid in Trichinella?
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intestinal villi
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larvae encyst in skeletal muscle
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Trichinella
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Name the 2 forms of Trichinella
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Urban-wild animals, no humans
Sylvatic-humans, hogs, rats in triangle |
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In Trichinella, who do humans infect?
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No one (dead end host) unless cannabolism
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What disease does Trichinella cause?
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Trichinellosis or Trichinosis
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List the 3 stages of Trichinella pathogenisity
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1. Penetration of females into mucosa
2. Migration of juveniles 3. Encystment into skeletal muscle |
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What happens when females penetrate intestinal mucosa in Trichinella
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Food poisoning like symptoms (12-48 hr PI), facial edema (5-7 days), severe tissue damage, 2nd bacterial infection
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What happens when juveniles are migrating in Trichinella?
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Damage to blood vessels and localized edema.
Pnemonia Pleurisy Encephalitis Meningitis Nephritis Deafness Peritonitis Brain/Eye Damage Lower Jaw |
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What happens when juveniles penetrate and encyst in skeletal muscle in Trichinella?
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Low BP and pulse, muscles hurt, difficult to breath/swallow, nervous disorders that lead to hallucinations.
Death due to heart, kidney, respirtory failure and toxemia |
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parasite of aquatic birds and terrestrial mammals
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Order Diotophymata
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Largest worm of mammals
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diocophyma renale
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Thick shelled egg in water
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dioctophyme renale
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embryonation occurs in water
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dioctophyme renale
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1/2-3 month embryonation
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dioctophyme renale
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ingested by oligochaete
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dioctopyme renale
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Where will the parasite penetrate the ventral vessel and develop to J3
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The oligochaete in dioctophyme renale
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What eats the oligochaete in Dioctophyme renale?
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Fish or frog
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travels to liver
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Dioctophyme renale
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Worm parasitizes the left kidney
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Dioctophyme renale
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Why wouldn't parasites show up on fecal flotations?
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Parasites aren't in the feces. They may be in muscle on other organ
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Bridges parasitism and freeliving
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Order Rhabditata
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Compare/contrast parasitic and freeliving in Strongyloides stercoralis
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Parasitic-haploid, only females-no sperm in seminal recepticles
Freeliving-Diploid, male and female |
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juveniles enter skin
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Strongyloides stercoralis
Family Anclyostomidae |
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Where do eggs hatch in Strongyloides stercoralis?
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intestine
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First parasite we looked at to use viseral larva migration
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Strongyloides stercoralis
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breaks into alveoli
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strongyloides stercoralis
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Rolling in the hay, tall grass
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Strongyloides stercoralis
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List the pathology for strongyloides stercoralis
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1. Invasion
2. Pulmonary 3. Intestinal |
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Symptoms similar to bronchial pneumonia
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stongyloides stercoralis
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What is the hookworm
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Order Strongylata
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What is the whipworm
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Trichuris
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wear shoes
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strongyloides stercoralis
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Evolved from Rhabdites
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Order Strongylata
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Killer worms
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Order Strongylata
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2-4-8 celled embryos
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Family Anclostomidae
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Where are eggs in Family Anclostomidae?
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Feces
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Where do eggs hatch in Ancylostomidae?
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feces
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What is the infective stage in Ancylostomidae?
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J3
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How does Ancylostomidae get into a human?
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burrows in skin
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Urine is fatal to development
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Family Ancylostomidae
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How do anclostomidae get into the intetines?
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VLM, TE
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Transmitable placental and mamory
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Ancylostomidae
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Life Cycle takes 5 weeks
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Ancylostomidae
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American human killer
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Necator americanus
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Probably introduced in slave trade
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Necator americanus
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95% of hookworms in Southern US are this
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Necator americanus
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Chinese/Indi/European variety
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Ancylostoma duodenal
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French horses
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Ancylostoma duodenal
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Creeping Eruption
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Ancylostoma duodenal
Ancylostama caninum |
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Ground Itch
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due to migrating juveniles
Ancylostoma duodenal |
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Pyogenic Bacteria
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Ancylostoma duodenal
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Can survive paratenic host
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Ancylostoma duodenal
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What animals in Ancylostoma caninum found in
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cats, dogs, humans
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Killed in skin
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Ancylostoma caninum
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Cutaneous Larval Migrant
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Ancylostoma caninum
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Attatches to intestinal villi and feeds. Contains anticouagulate enzyme
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ancylostoma caninum
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bloody feces
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ancylostoma caninum (all 3-N. americanus, A. duodenal, A. caninum)
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anemia as a symptom
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A. caninum
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May find nuclei in blood smear
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Ancylostoma caninum
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In domestic animals
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Family Trichostrongylidae
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Biggest problem in sheep, cows, goats-anything with ruman
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Family Trichostrongylidae
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abomasum of ruminants
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Haemonchus contortus
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causes anemia, emaciation, edema, intestinal disorder
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Haemoncus contortus
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Hookworm similar to Haemonchus contortus
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Ostertagia
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hookwork of horses
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Trichostongylus sp.
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death due to cholic
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trichostongylus sp.
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