This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanical injuries, Subject name: Forensic Medicine
In case of hanging neck ligature marks are example of - 
Select and explain. 
A. Contusion, B. Pressure abrasion, C. Lacerration, D. Bruise
B: Pressure abrasion
Answer: B: Pressure abrasion 
Explanation: The synopsis of forensic medicine & toxicology - Dr k.s.narayan reddy ;28th edition; Pg no. 105 Also called crushing or friction abrasion. The are caused by crushing of superficial layer of epidermis & are associated with bruise of the surrounding area . occurs when movement of instrument is around 90deg to the skin .hanging ,strangulation ,teeth bite marks are examples .