IAL BIO 6C- FORENSIC SCIENCE AND THE TIME OF DEATH скачать в хорошем качестве

IAL BIO 6C- FORENSIC SCIENCE AND THE TIME OF DEATH

FORENSIC SCIENCE AND THE TIME OF DEATH TOPIC SUMMARY Definition Forensic Science is the application of the scientific techniques to the investigation of a crime. Forensic science gives us the tools to help us solve crimes including murders. Application of Forensic science – Why it is an important area of study.  Forensic science can be used to help determine facts about a death, such as: time of death, cause of death, location of death, and if a crime was committed. What makes internal body temperature an important factor in determining time of death?  After death, a body cools in a fairly predictable manner, despite the rate of cooling bring affected by various factors such as fat levels, mode of death, surrounding temperature, surface area to volume ratio, and clothing. From analyzing cooling curve for bodies under known conditions it is possible to estimate the time of death. Discuss how the following factors Affect Body Cooling After Death  Fat Levels: Higher body fat acts as insulation, slowing down the rate of cooling. A body with more fat will retain heat longer than a leaner body.  Mode of Death: The circumstances of death can impact cooling. For example, a body submerged in cold water will cool faster than one in a warm environment. Similarly, death from conditions that elevate body temperature (e.g., fever, exertion) may result in a slower initial cooling rate.  Surrounding Temperature: The ambient temperature has a direct effect. A body in a cold environment will cool faster than one in a warm environment.  Surface Area to Volume Ratio: A body with a larger surface area relative to its volume will cool faster. This is because heat dissipates more quickly from a larger surface area. Smaller individuals or those with a more slender build tend to have a higher surface area to volume ratio and will cool faster than larger individuals.  Clothing and Covering: Clothing and coverings act as insulation, trapping heat and slowing down the cooling process. A body wrapped in blankets or clothing will cool more slowly than an exposed body. Define Rigor Mortis Rigor Mortis is a temporary muscle contraction causing the body to become rigid after death Explain how rigor mortis occurs  Rigor mortis occurs after death as muscles stiffen due to a lack of ATP. It typically begins 2-4 hours after death, taking 6-8 hours to fully set in, and lasting 36-48 hours. Factors that affect the rate at which rigor mortis sets in. Rate at which rigor mortis sets in is affected by factors such as: the amount of ATP in the muscles at the time of death, Factors that Influence the amount of ATP in the muscles at the time of death,  genetics,  fitness level, and  activity before death. Conclusion  Both body temperature and rigor mortis can be used to help estimate the time of death, and combining these with other evidence can improve the accuracy of the estimate. Other evidence includes: Evidence of the eye witnesses And Circumstantial evidence Created with CapCut: https://www.capcut.com/s/CTtk_OftECn6... #CapCut