Parasitic Worms Flashcards
Name a parasitic worm that is identified by seeing large oval eggs with a lateral spike in tissue samples
Schistosoma
Name a parasitic worm that is identified by using a scotch tape prep
Enterobius
Name a parasitic worm that causes heart worm disease in dogs
Dirofilaria
Name a parasitic worm that causes a complication in humans called hydatid cyst disease
Echinococcus
Name a parasitic worm that causes a complication in humans called cystercercosis
Taenia solium
Which parasitic worm is known as “the large intestinal round worm” measuring 12-18 inches?
Ascaris species
Which parasitic worm is commonly called a “pinworm” because it looks like sewing pins measuring 1-1.5 in long?
Enterobius species
Which two parasitic worms are known as “hook worms,” will have “clear areas between the shell and developing larvae and have things that look like teeth but are only hooks to hang on with?
Ancyclostoma species
Necator species
Which parasitic worm is known as “whip worm”?
Trichuris species
Which parasitic worm is known as “muscle worm” because it makes a whole in the muscle tissue, then the body puts calcium on the hole, then once removed, the body puts scar tissue in the hole.
Trichinella species
Which parasitic worm may use the ELISA test to look for antigens?
Dirofilaria species
Which parasitic worm is associated with tropical diseases, and the adults block the flow of lymph fluid causing swelling, inflammation and scar tissue?
Wuchereia species
Which parasitic worm is known as the African eye worm; removal includes disection of the sclera to pull it out?
Loa loa
Which parasitic worm is known as the “eye worm” and causes “River blindness”?
Onchocera species
Which parasitic worm is also known as the “guinea worm” and does not want to stay inside of you; wanting to get back to water to lay its eggs. It crawls out of lesions or blisters and you have to try not to break it when removing it because if it breaks, the inflammatory response is worse than having the worm inside you!
Dracunculus species
Which parasitic worm has a large egg, a lateral spike and is arthropod borne?
Schistosoma species
What are the three Schistosoma species?
Schistosoma Monsoni
Schistosoma Haematobium
Schistosoma Japonicum
Which parasitic worm is known as the “lung fluke” because of the damage it does to the lung and respiratory tract?
Paragonimus species
Which parasitic worm is known as the “liver fluke” because it causes damage to the liver?
Fasciola species
Which parasitic worm is known as the “Chinese Liver Fluke” and is known for its very small egg?
Clonorchis species
Which parasitic worm is known as “dwarf tapeworm” and is a zoonoses of rodents?
Hymenolepsis species
Which parasitic worm is known as “beef tapeworm”?
Taenia saginatta
Which parasitic worm is known as “pork tapeworm”?
Taenia solium
Which parasitic worm is known as the “fish tapeworm” and is identified by its long sucker?
Diphyllobothrium species
Which parasitic worm is known as the “dog tapeworm.” You are not the natural host.
Echinococcus species
Your patient presents with anal blockage and the fecal sample shows a round egg with sculptured shell. Which parasitic worm might this be?
Ascaris Lumbracoidies
Your patient presents with peri anal itching. The specimen shows little worms 1 - 1.5 inches in length that look like sewing pins. The fecal sample shows oval eggs, flattened on one side. Which parasitic worm might this be?
Enterobius
Your patient presents with decreased energy. You find they typically walk around the yard without shoes and the fecal specimen shows a large oval egg with clear areas between the larvae and the shell. Which two parasitic worms may fit this description?
Ancyclostoma and Necator
Your patient presents with rectal prolapse with worms falling out of the body. The fecal sample shows oval eggs with plugs at the ends and appears to look like a bullwhip. Which parasitic worm might this be?
Trichuris
Your patient biopsy shows cysts in their muscles. And when interviewed your patient explains they like their bacon limp and not crispy. Which parasitic worm may have infected your patient?
Trichinella
You take your pet to the vet to see if he has heart worms. What type of test will the vet have to perform and what are they looking for?
Blood test - Larvae in the blood
How are heartworms acquired by animals?
Mosquitos
Your patient presents with increased swelling throughout their body especially their lymph nodes. Upon interview you find they have traveled to the tropics where they were attacked by mosquitos. Which parasitic worm may have invaded your patient?
Wucheria
Your patient presents with a worm that roams across their eyeball. Upon interview they tell you they recently traveled to Africa. Their biopsy shows larvae in the tissues. What disease do you diagnose them with and what type of arthropod would do such a thing?
Loaiasis
Mango flies (genus Chysops)
Your patient presents with an inflammatory reaction in the eye and has subcutaneous tissue nodules in their knees and elbows. The patient feels as though they may be bitten by a black fly. What parasitic worm may have invaded your patient?
Onchocerca
Your patient presents with a worm crawling out of a lesion in their skin. Upon interview you find they consumed water from a river while hiking in New Guinea. What parasitic worm fits this description?
Dracunculus
Your patient presents to your office not feeling well after having swam every day in water in a foreign country. After performing a blood test you discover a large egg with a lateralposterior spike. Which parasitic worm may have invaded your patient?
Schistosoma
Your patient presents to your office with a possible upper respiratory tract infection. Upon interview you find your patient has a diet heavy in crustaceans. In the suputum sample you see oval operculated eggs. What parasitic worm may have invaded your patient?
Lung fluke aka Paragonimus
Your patient presents to your office with pain in their upper right quadrant. Upon interview you find they ingest seaweed as a way to up their iodine intake. In their fecal sample you find large oval operculated eggs. And their lab work returns with possible damage to their liver. What parasitic worm has possibly invaded your patient?
Fasciola aka liver fluke
Your patient presents to your office after a recent visit to China where they sampled all the shellfish of the world. In their fecal sample you see very small oval operculated eggs. What parasitic worm may have invaded your patient?
Clonorchis aka Chinese liver fluke
Mechanism for release of larval form; resembles a contact lens
Operculated egg
What is another term for phylum platyhelminthes?
Flatworms
What is another term for phylum platyhelminthes class Trematoda?
Flukes
What is the characteristic shape of phylum platyhelminthes class trematoda?
Leaf shaped
An exterminator presents to your office after eradicating rodents from an old house. The upper floor fell in and his mouth was filled with what may have been rodent eggs. The fecal sample shows round eggs with a thick shell. Which parasitic worm may have invaded your patient?
Hymenolepsis
Your patient presents to your office and you find they have a diet high in steak tartar. Upon inspection of the fecal sample you notice round eggs with a thick shell. What possible parasitic worm has invaded your patient?
Taenia saginata
Your patient presents to your office after having possibly eaten some undercooked pork. Their fecal sample shows round eggs with a thick shell and you notice (somehow) evidence of possible larval damage as the larvae have been migrating through his body for quite some time. What is the disease you diagnose your patient with and which parasitic worm caused all this damage?
Cystercerosis
Taenia solium
Your patient presents to your office after a camping trip to the river. The campers lived for a week on fresh fish, but he suspects his camping partner may not have cooked the fish through and through. Upon viewing the fecal sample, you see oval eggs which are operculated. You also notice an adult specimen which has a long sucker. Which parasitic worm may have invaded your patient?
Diphyllobothrium
You patient presents to your office and upon x ray you see systemic cysts; some the size of a grapefruit, but one the size of a basketball. What is the disease you diagnose your patient with, what is the name of the parasite and what is the common name for it?
Hydatid cyst disease
Echinococcus
Dog tapeworm
Body segments full of reproductive organs; the more mature the father they are from the scolix
Proglottids
The hook and sucker part of parasitic worms
Scolex
