Greenish discoloration of the body first seen in the right iliac fossa after death is due to formation of ?
Ans. is 'c' i.e., Sulph - meth hemoglobin Signs of putrefaction The signs and effects of putrefaction are as follows :? 1. Colour changes The earliest sign of decomposition is greenish discoloration of body, seen in right iliac fossa externally and under liver internally. This is due to involvement of caecum. Which contains more liquid and is full of bacteria. In these areas, it appears in 12-18 hours and slowly spreads to whole body in 24-48 hours. Greenish discoloration is due to formation of sulph-meth-haemoglobin. Morbling occurs when Hb dissociates from RBCs and the colour of Hb is taken up by vessels, which are seen as prominent lines having purple or green or brown colour. Marbling occurs in 24-48 hours. 2. Formation of foul smelling gases Due to action of bacteria, foul smelling gases are formed, e.g. SO, , H2S, ammonia, methane and CO2. 3. Effects of gases Bloating up of body occurs in 34-48 hours. At the same time following changes occurs : i) Appearance of stomach contents and froth on nose and mouth. ii) Degloving and destocking with appearance of putrefactive blisters. iii) Emptying of hea due to pressure of gas. In 48-72 hours prolapse of rectum and uterus occur and postmoem delivery may occur if the dead woman is pregnant. Color of postmoem staining also changes to brown and finally to black. False rigidity (putrefactive rigidity) may occur at this time. 4. Appearance of maggots Flies lay their eggs in wounds, exposed natural orifices and exposed moist pas of the body and folds of skin, e.g. neck, axilla, nostrils, mouth etc. Flies lay eggs in 6-12 hours after death and these eggs change in larva (maggot) in 1-2 days. Thus maggots appear in 2-3 days after the death. After fuher 4-5 days, the maggots change into pupa, which conve into adult flies in next 3-5 days. Thus adult flies will be coming out of the body after total 8-12 days of death. Thus appearance of maggot determine the time since death. 5. Other late changes In 3-5 days : Nails and teeth become loose and can be pulled out, sutures of skull may separate. In 7-12 days : Liquefaction of body (colliquative putrefaction) occurs. In 1-3 months : Skeletonization of dead body occurs. Finally : Bones also decompose : Exposed bones in 1-5 years and deep burried bone (> 2 meters) in 25-100 years. 6. Internal changes Liver becomes spongy and is called as foamy or swiss cheese or honeycombed liver. In 7-12 days lequefaction of internal organs occur. 7. Floatation of body (if body is in water) Floatation of body occurs due to occumulation of sufficient putrefactive gases. Abdomen is above (due to gases) and spine is below during floatation. Time required for floatation is ordinarily 24 hours after death in summers and 2-3 days in winter. Factors affecting floatation are :- i) Causing early.floatation : Newborn mature infant, females, in summer, clothed body, obese, in sea water and in still pond water. ii) Causing delayed floatation : Still bih/immature newborn, male, in winter, naked body, thin built, in fresh water and in running stream water. Inspiration and expiration before death has no effect on floatation as floatation is due to putrefactive gases (not due to respiratory air).
Sulph hemoglobin
Meth hemoglobin
Sulph - meth hemoglobin
None of the above