In a suspected case of death due to poisoning where cadaveric rigidity is lasting longer than usual, it may be case of poisoning due to: (A) Lead, (B) Arsenic, (C) Mercury, (D) Copper
Answer is B. Ans. is 'b' i.e. arsenic Arsenic poisoning delays rigor mortisAlso rememberRigor is delayed by cold and accelerated by heat*Rigor mortisCommences in about 2-3 hrs*Develops in-12 hrs*Persists for-12 hrs*Passes off -12 hrs*More questions on Rigor mortisRigor mortis first appears in involuntary muscles and then in voluntary muscles.*First involuntary muscles to be involved in rigor mortis - heart muscles*First voluntary muscle to be involved in rigor mortis - Muscle of eyelid*