KROK 1 2008 – Question 99 · KROK (Medicine) · Biology
A patient has acne on his face. Microscopic examination of scrapings from the affected areas revealed living porrect vermiform arthropoda 0,2-0,5 mm large with four pairs of short extremities in the front part of their bodies. What is the laboratory diagnosis?
- A. Myiasis
- B. Scabies
- C. Demodicosis
- D. Pediculosis
- E. Phthiriasis
Hint
Count the pairs of legs: lice are insects with three, fly larvae have none, mites have four. Then think about the size and elongated shape of the mites you know and where on the face such a parasite could live.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Biology
- A boy found a spider with the following morphological characteristics: it is 2 cm long, has roundish black abdomen with two rows of red spots on its…
- Life cycle of a cell includes the process of DNA autoreduplication. As a result of it monochromatid chromosomes turn into bichromatid ones. What…
- Examination of a 12 year old boy with developmental lag revealed achondroplasia: disproportional constitution with evident shortening of upper and…
- A gynaecologist was examining a patient and revealed symptoms of genital tract inflammation. A smear from vagina contains pyriform protozoa with a…
- A boy has I (I⁰I⁰) blood group and his sister has IV (IᴬIᴮ) blood group. What blood groups do their parents have?
- For the purpose of myocardium infarction treatment a patient was injected with embryonal stem cells derived from this very patient by means of…