This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries, Subject name: Forensic Medicine
Rigor mortis start in: 
Select and explain. 
A. Heart, B. Brain, C. Right iliac fossa, D. Left iliac fossa
A: Heart
Answer: A: Heart 
Explanation: Ans. (A). HeartRigor mortis (which is due to ATP depletion) starts in heart within 1 hourQ.Externally, rigor mortis first involves eyelidsQRigor mortis involves both voluntaryQ & involuntary muscles (involuntary muscles earlier than voluntary muscles)#Rigor mortis occurs earlier in cholera & strychnine poisoning#Pugilistic attitude is non specific