A histological section of the thymic medulla shows concentric whorls of keratinized epithelial cells. These structures are identified as:
- A Pacinian corpuscles
- B Malpighian corpuscles
- C Hassall corpuscles ✓
- D Meissner corpuscles
Correct answer: C. Hassall corpuscles
Explanation
Hassall corpuscles are pathognomonic structures of the thymic medulla, composed of concentric whorls of keratinized epithelial reticular cells. Malpighian corpuscles are found in the spleen. Pacinian and Meissner corpuscles are mechanoreceptors located in the skin and are unrelated to thymic histology.
Reference: Wheater's Functional Histology, 6th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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