This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Poroscopy in a forensic lab involves which of the following? 
Select and explain. 
A. Counting the whorls in the fingerprints, B. Counting pores of sweat glands, C. Counting pores of sebaceous glands, D. Counting number of papillary ridges
B: Counting pores of sweat glands
Answer: B: Counting pores of sweat glands 
Explanation: Poroscopy is the term applied to a specialized study of pore structure found on papillary ridges of skin as a means of identification. It comes under level 3 detail of identification and hence is more reliable and accurate. It is a fuher study of fingerprints described by Locard. There are plenty of micropores in between the papillary ridges of the skin, which are openings of sweat glands. Ref: Textbook of Forensic Medicine and Toxicology by Nagesh Kumar Rao, Page 100