KROK 1 2019 – Question 177 · KROK (Medicine) · Histology, Cytology, and Embryology
An unidentified surgical specimen is received for histopathologic analysis. A portion of the specimen is cut and stained with hematoxylin and eosin. Under the microscope, you see an organ encapsulated by dense connective tissue that extends to the deeper areas by way of the trabecular extensions. The organ can be subdivided into two regions: a cortex with lymphoid nodules and medulla with medullary cords populated by plasma cells, B-cells and T-cells. Which of the following structures is most likely the origin of this surgical specimen?
- A. Bone marrow
- B. Lymph node
- C. Thymus
- D. Spleen
- E. Tonsils
Hint
Compare the capsule, outer nodules and inner cords with the architecture of each immune organ, noting which have a cortex and medulla and where nodules sit within them.
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 Histology, Cytology, and Embryology
- Proliferation of the connective tissue in the hepatic parenchyma (fibrosis) caused by chronic diseases is often associated with disturbed blood…
- For diagnostic purposes a parenchyma sample of the patient’s blood-forming organ was obtained. The sample contained megakaryocytes. What organ is it?
- Histological specimen shows parenchyma of an organ that consists of lymphoid tissue that forms lymph nodules; the nodules are located diffusely and…
- A histological specimen demonstrates a vessel with the wall that consists of endothelium, basement membrane, and loose connective tissue. What type…
- One of the cell organelles is the place, where protein molecules are being built and packaged with carbohydrates and fats, before they are…
- An electronic microphotograph shows a fragment of the renal corpuscle. In the photograph there is a large epithelial cell with numerous appendages…