Parasitology Flashcards
Which of the Protozoan cyst below often contain chromatoidal bars, which tend to be splinter shaped and irregular?
B. Entamoeba coli
Which refers to the protozoan parasite of pigs and monkeys
A. Entamoeba polecki
What protozoan parasite whose cytosome is referred to as a “shepherd’s crook” with a lemon or pear shape
C. Chilomastix mesnili
Which protozoan resembles Chilomastix cyst with “bird beak” fibril arrangement
D. Retortamonas intestinalis
Which of the following dimensions in the template used in Kato Katz technique will containing 20 mg of stool
D. 6.5 mm x 0.5mm
Which nucleus is responsible for reproduction in the trophozoite stage of the Balantidium coli?
Macronucleus
Which of the following is not a characteristic of Dientamoeba fragilis?
Generally has 4 nuclei
What is the treatment of choice for balantidiasis
Tetracycline
A 40 y.o male with HIV, presented with diarrhea of 2 weeks. Acid-fast staining of his stool revealed red-pink doughnut-shaped circular organisms resembling oocysts. What parasite is the possible cause of his diarrhea
Cryptosporidium hominis
Ground itch” or “dew itch” is a dermatitis caused by which of the following nematodes:
Necator americanus
Long-standing and heavy infection can cause protein-losing enteropathy. Which parasite is responsible for this:
Strongyloides stercoralis
Which of the following does not undergo heart- lung migration?
Whipworm
Which of these drugs is used to treat protozoan infection?
Mebendazole
Nocturnal pruritus is commonly seen in which of the following parasitic infections?
Enterobiasis
All of the following are components of the kato thick technique except?
Orcein
What is the parasite that caused the “Mystery” disease in Compostella valley?
I’m
Pudoc worm
What is best way to distinguish Entamoeba histolytica from Entamoeba dispar infection?
PCR method
Steatorrhea in Giardiasis is caused by what type of diarrhea?
Osmotic diarrhea
In the Fischer indole synthesis, from what amino acid is converted in to indoleacetic acid which would finally be a derivative of skatole?
Tryptophan
A young patient complains of epigastric pain and dyspnea. Upon observation the patient had yellowish sclerae. The patient’s stool was observed as clay-colored. What parasitic infection could have caused the patient’s condition?
Biliary ascariasis
Blythe complains of vaginal pruritus after meeting with Ford and upon internal examination, red spots were seen on her cervix which could be likened to a strawberry. What could be the cause of her complaint?
Trichomonas vaginalis
Pyrantel pamoate is always taken in tandem with albendazole during a helminthic infection. What is the reason for this?
It prevents the nematodes from migrating during treatment and is thus synergistic
This drug’s mode of action is to inhibit protein synthesis by interacting with the DNA and causes helical DNA structure breakage once it diffuses in to the organism. Identify what drug is stated.
Metronidazole
Which of the following diseases does not require an occult blood test?
Hemorrhoids
A patient came in with painful bowel movements which upon macroscopic examination contained blood and mucus. Patient noted that the physician noted rectal prolapse on physical examination. What is the expected ova description if the cause was parasitic?
Barrel-shaped, thick-shelled and possess a pair of polar “plugs” at each end
Respiratory distress due to nematode infection is most likely due to what action of the parasites?
Heart lung migration