CRIM 355 Lecture Notes - Lecture 5: Autocatalysis, Blood Falls, Putrefaction

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Most important questions after who is when. Focusing on the investigation: timeline prior to death. Cannot be that specific about the time of death. A(cid:374)a(cid:373)(cid:374)esti(cid:272): people"s (cid:373)e(cid:373)ory of a regular patter(cid:374) of a(cid:272)ti(cid:448)ity. Eye witness: was present at the time of death. Many variables affecting the time of death estimate. After death, the body cools down to ambient temperature. Drop of half or 3 quarters of 37 degrees an hour. Useful for the first 18 hours after death. Varies with: body size, thick clothing, fever at death, drinking heavily at death, violent death. An obese person will cool down slower than a skinny. Thick clothing can insulate the body temperature person. Not as affected by the environmental temperature. A baby will cool down faster than a grown man. Not affected by external temperatures (environmental temperature) Takes place in the muscles of the body: all muscles becoming rigid. Lactic acid is produced and built up in the muscles.

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