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
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*
Lead
Arsenic
Mercury
Copper
Inorganic Irritants