Post Mortem Changes Flashcards
Early postmortem changes (3)
Temperature degradation
Hypostasis
Rigormortis
Late postmortem changes (4)
Decomposition and autolysis
Mummification
Adipocere
Skeletonisation
Human body ___ obey Newton’s law of colling
does not
Metabolic heat production ____ occur uniformly in humans
does not
Some heat generation continues after death for variable time (T/F)
T
Factors affecting body cooling (7)
Initial body temperature Strenuous exercise Illness- fever Drug reactions Body dimensions Oedema Dehydration
Hypostasis
Occurs when circulation ceases and gravity pools blood to lowest accessible area
Cherry Red Hypostasis
Carboxyhaemoglobin- CO3 Poisoning
Dark blue-pink
Cyanide poisoning
Brownish red
Methaemoglobin- certain chemicals or drug
Rigor Mortis
Stiffening and shortening of muscles fibres due to reduction of ATP
What muscles are affected first in rigor mortis
small muscles before larger muscles
Factors affecting timing
Temperature Physical activity Body temperature before death Convulsions Electrocution
Warm and flaccid
dead less than 3 hours
Warm and stiff
dead 3-8 hours