| Match each parasite listed here with its corresponding infective stage: | View Page |
| Match each parasite listed here with its corresponding diagnostic stage: | View Page |
| Which of the parasites listed here is/are transmitted via ingestion of contaminated pork? | View Page |
| Which of the following parasites may be contracted by swimming in contaminated water? | View Page |
| Human infection of the schistosomes occurs following penetration of what morphologic form into the skin? | View Page |
| Arrange the following life cycle phases of Diphyllobothrium latum in order beginning with human transmission: | View Page |
| Arrange the general schistosome life cycle phases in order beginning with that found in the human: | View Page |
| This suspicious form, shown here at both low (10X) and high dry (40X) power, measures 90 µm by 42 µm. It was seen in a stool sample. | View Page |
| This parasite may inhabit the small intestine or take up residence in the bile ducts. It typically measures 145 µm by 75 µm. | View Page |
| This intestinal parasite, found in stool, measures 170 µm by 63 µm. | View Page |
| This suspicious form, seen on a scotch tape prep, measures 54 µm by 28 µm. | View Page |
| This suspicious form was seen in a stool specimen and measures 33 µm by 28 µm. | View Page |
| This suspicious form was found on a blood smear. | View Page |
| This suspicious form, found in stool, measures 55 µm. | View Page |
| This suspicious form, found in stool, measures 54 µm by 32 µm. | View Page |
| Perianal itching is the major symptom of infection with both forms of the organism pictured here. This parasite is the causative agent of: | View Page |
| Which of the following parasites is the causative agent of swamp fever? | View Page |
| Match each parasite named below with its respective primary symptom: | View Page |
| Which of the following conditions may be associated with the presence of this stool parasite? | View Page |
| With which of the following conditions is this suspicious form associated? | View Page |
| The motile, feeding stage of the amebas and flagellates is called: | View Page |
| Arrange the following parasites in order (smallest to largest) based on relative egg size: | View Page |
| Match each parasite listed here with the picture of its corresponding egg:Note: Answers may be used more than once. | View Page |
| Which of the following parasites is/are typically recovered in sputum samples? | View Page |
| Which of the following parasites, whose common names are listed below, is/are intestinal in nature? | View Page |
| The eggs of this parasite arrange themselves in membrane-enclosed clusters known as packets: | View Page |
| The eggs of Necator americanus are basically indistinguishable from the eggs of: | View Page |
| Match each parasite with the key characteristic that aids in its identification: (Each answer may only be used once.) | View Page |
| The only nematode egg that is characteristically flattened on one side is: | View Page |
| Match each parasite listed here with its corresponding key identifying characteristic found in the egg morphologic form: | View Page |
| The morphologic structure of select tapeworms that is most likely responsible for piercing the human intestinal wall is/are called: | View Page |
| Label the morphologic structures on this parasite form: | View Page |
| Label the morphologic structures on this parasite form: | View Page |
| A 55 year old female, who recently returned from an extensive trip to China, presented to her physician complaining of diarrhea and abdominal cramps. The doctor ordered a complete blood count (CBC), chem 21 panel, and stool for culture and parasite examination (O & P). The CBC revealed pronounced eosinophilia. The chem 21 and stool culture were unremarkable. The O & P revealed suspicious forms like the one below that each measured approximately 140 µm by 80 µm. This patient is most likely infected with: | View Page |
| A 45 year old mother of two went to her physician because her children were recently diagnosed with ascariasis and she was concerned that she had also contracted the disease. Other than complaining of recent sporadic diarrhea, she was in overall good health. The doctor ordered a stool for ova & parasite examination. This suspicious form, measuring 55 µm was seen throughout the sample. This form is most likely: | View Page |
| A 7 year old male presented to the local clinic experiencing mild, yet annoying, abdominal pain, diarrhea and nausea. Patient history revealed that the child lives in a shack where sanitation practices are marginal, at best. The dwelling is infested with rats and multiple insects. Stool was collected and submitted for parasitic study. Numerous suspicious forms, measuring 60 µm by 75 µm were seen. This child is most likely infected with: | View Page |
| A fresh stool sample was submitted to the laboratory for parasitic examination on a 30 year old male who presented to a local clinic complaining of gastrointestinal discomfort and overall weakness. The only patient history available about the patient was that he was here job hunting and that he is originally from rural Mississippi. The sample was immediately processed and this suspicious form was seen. No other suspicious forms resembling eggs were seen. The patient is most likely infected with: | View Page |
| A 4 year old female from South Carolina was rushed to the emergency room who was suffering from malaise, bloody diarrhea and abdominal pain. Examination revealed rectal prolapse. Stool was submitted for parasitic examination and this suspicious form was seen. It measures 45 µm by 20 µm. Which of the following is the correct identity of this suspicious form? | View Page |
| A stool collected at a local doctor's office was received in the laboratory for parasitic examination. The sample was not received in fixative and due to the new courier system did not arrive in the lab within the traditionally acceptable time frame. Due to logistical difficulties of the patient collecting and submitting another sample, the laboratory director authorized the sample to be processed. The comment "specimen delayed in transit, please evaluate results accordingly" was included in the report. These two suspicious forms were seen upon examination of the specimen. Label these two forms: | View Page |
| A 6 year old female presented to the local clinic complaining of intense perianal itching and diarrhea. The doctor ordered a cellophane tape prep and stool for routine culture and parasitic examination. The cellophane tape prep revealed suspicious form on the left. The stool culture was negative. The form on the right was seen upon examination of the stool for parasites, which measures 10 µm. Label these two suspicious forms: | View Page |
| A 29 year old male steak house owner from Arizona presented to his doctor complaining of weight loss, abdominal pain and diarrhea. Patient history revealed that the man eats all of his meals at his restaurant and his favorite meat is rare sirloin steak. The man also noted that he had recently been on anti-parasitic medication. The doctor ordered a stool for parasitic examination. These two suspicious forms were seen. The patient is most likely suffering from an infection with: | View Page |
| I measure 45 µm and am found in stool. | View Page |
| I measure 30 µm by 15 µm and am found in stool. | View Page |
| I measure 65 µm in length and am found in stool. | View Page |
| I am found in stool. | View Page |
| I am found in stool and measure 33 µm in diameter. | View Page |
| I am found in stool and measure 45 µm by 25 µm. | View Page |
| This parasite measures 28 µm by 17 µm. Its common name is: | View Page |
| This parasite measure 50 µm by 30 µm. Its common name is: | View Page |
| This suspicious form, recovered in stool, measures 120 µm by 63 µm. Name that parasite! | View Page |
| A single adult worm that contains both male and female sex organs, thus able to self-fertilize, is known as: | View Page |
| Arrange the following phases of the Echinococcus granulosus life cycle in order beginning with human transmission: | View Page |
| The developmental morphologic stage in select arthropod life cycles in which the organism physically resembles the corresponding adult stage is called the: | View Page |