<prompt> Postmortem rigidity disappears first in:Upper limbsNeckLower limbsEyelids  <response>: Ans. d EyelidsRef: The Essentials of FSM by K.S. Narayan Reddy 31st ed. 140-43, 147; Reddys 2Th 142Order of appearance and disappearance in sequence Heart left chamber in 1 hour Eyelids 3-4 hours Face muscles Neck and trunk Upper extremities Legs Small muscle of finger and toes last to be affected, 11-12 hoursAlso Know Postmortem rigidity lasts for 18-36 hours in summer and 24-48 hours in winter. Postmortem rigidity disappear in the same order as that of the appearance 