Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

90 Cards in this Set

  • Front
  • Back
long pharynx
Adults in rectum and colon
Embryonation in soil for 21 days
J1 in Crypts of Lubricyne
Warm, wet, shady climate
Family Anclostomidae
Causes prolapses
Adults mature in 21 days
Parasitic to all parts of the body
Where is Capilaria hepatica found
liver of rodents
What is the infected stage of capillaria?
What is the paratenic host for capillaria hepatica
cats or dogs
What does capillaria hepatica cause?
Scar tissue to parenchyma
intestines of Philippeans
C. Philippensis
lungs of cats and dogs
C. aerophila
commercial fox farms
C. aerophila
Crop of chickens and turkeys
C. annulata
C. caudinflata
What's the intermediate host of C. annulata and C. caudinflata?
smallest nematode of humans
Trichinella spiralis
Temperate zones
Trichinella spiralis
Widely spread-possibly cosmopolitan
Trichinella spiralis
Trichinella nelsoni
Trichinella pseudospiralis
First found in racoons
Trichinella pseudospiralis
Where is Trichinella adults found
WOVEN/THREADED in intestine
Where are the eggs laid in Trichinella?
intestinal villi
larvae encyst in skeletal muscle
Name the 2 forms of Trichinella
Urban-wild animals, no humans

Sylvatic-humans, hogs, rats in triangle
In Trichinella, who do humans infect?
No one (dead end host) unless cannabolism
What disease does Trichinella cause?
Trichinellosis or Trichinosis
List the 3 stages of Trichinella pathogenisity
1. Penetration of females into mucosa
2. Migration of juveniles
3. Encystment into skeletal muscle
What happens when females penetrate intestinal mucosa in Trichinella
Food poisoning like symptoms (12-48 hr PI), facial edema (5-7 days), severe tissue damage, 2nd bacterial infection
What happens when juveniles are migrating in Trichinella?
Damage to blood vessels and localized edema.
Brain/Eye Damage
Lower Jaw
What happens when juveniles penetrate and encyst in skeletal muscle in Trichinella?
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
parasite of aquatic birds and terrestrial mammals
Order Diotophymata
Largest worm of mammals
diocophyma renale
Thick shelled egg in water
dioctophyme renale
embryonation occurs in water
dioctophyme renale
1/2-3 month embryonation
dioctophyme renale
ingested by oligochaete
dioctopyme renale
Where will the parasite penetrate the ventral vessel and develop to J3
The oligochaete in dioctophyme renale
What eats the oligochaete in Dioctophyme renale?
Fish or frog
travels to liver
Dioctophyme renale
Worm parasitizes the left kidney
Dioctophyme renale
Why wouldn't parasites show up on fecal flotations?
Parasites aren't in the feces. They may be in muscle on other organ
Bridges parasitism and freeliving
Order Rhabditata
Compare/contrast parasitic and freeliving in Strongyloides stercoralis
Parasitic-haploid, only females-no sperm in seminal recepticles

Freeliving-Diploid, male and female
juveniles enter skin
Strongyloides stercoralis
Family Anclyostomidae
Where do eggs hatch in Strongyloides stercoralis?
First parasite we looked at to use viseral larva migration
Strongyloides stercoralis
breaks into alveoli
strongyloides stercoralis
Rolling in the hay, tall grass
Strongyloides stercoralis
List the pathology for strongyloides stercoralis
1. Invasion
2. Pulmonary
3. Intestinal
Symptoms similar to bronchial pneumonia
stongyloides stercoralis
What is the hookworm
Order Strongylata
What is the whipworm
wear shoes
strongyloides stercoralis
Evolved from Rhabdites
Order Strongylata
Killer worms
Order Strongylata
2-4-8 celled embryos
Family Anclostomidae
Where are eggs in Family Anclostomidae?
Where do eggs hatch in Ancylostomidae?
What is the infective stage in Ancylostomidae?
How does Ancylostomidae get into a human?
burrows in skin
Urine is fatal to development
Family Ancylostomidae
How do anclostomidae get into the intetines?
Transmitable placental and mamory
Life Cycle takes 5 weeks
American human killer
Necator americanus
Probably introduced in slave trade
Necator americanus
95% of hookworms in Southern US are this
Necator americanus
Chinese/Indi/European variety
Ancylostoma duodenal
French horses
Ancylostoma duodenal
Creeping Eruption
Ancylostoma duodenal
Ancylostama caninum
Ground Itch
due to migrating juveniles
Ancylostoma duodenal
Pyogenic Bacteria
Ancylostoma duodenal
Can survive paratenic host
Ancylostoma duodenal
What animals in Ancylostoma caninum found in
cats, dogs, humans
Killed in skin
Ancylostoma caninum
Cutaneous Larval Migrant
Ancylostoma caninum
Attatches to intestinal villi and feeds. Contains anticouagulate enzyme
ancylostoma caninum
bloody feces
ancylostoma caninum (all 3-N. americanus, A. duodenal, A. caninum)
anemia as a symptom
A. caninum
May find nuclei in blood smear
Ancylostoma caninum
In domestic animals
Family Trichostrongylidae
Biggest problem in sheep, cows, goats-anything with ruman
Family Trichostrongylidae
abomasum of ruminants
Haemonchus contortus
causes anemia, emaciation, edema, intestinal disorder
Haemoncus contortus
Hookworm similar to Haemonchus contortus
hookwork of horses
Trichostongylus sp.
death due to cholic
trichostongylus sp.