This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Identification of Dead and Mass Disaster, Subject name: Forensic Medicine
Involvement of erector pili muscle after death causes? 
Select and explain. 
A. Cutis cervicalis, B. Cutis Laxa, C. Cutis marmorata, D. Cutis anserine
D: Cutis anserine
Answer: D: Cutis anserine 
Explanation: ANSWER: (D)Cutis anserineREF:Review of Forensic Medicine and Toxicology By Gautam Biswas 2nd ed page 157Cutis anserine = Goose skin= horripilation is granular appearance of the skin caused by contraction of erector pilorum muscles are found on the anterior surface of the body, particularly the extremities, seen in drowning.This is due to the rigor mortis of erector pilorum muscles of hair follicles in the skin and subcutaneous tissues