1 / 21

Date: May 6, 2013

Aim: SWBAT explain what causes algor mortis, and use algor mortis evidence to estimate time of death. Date: May 6, 2013 Do Now: In one sentence, explain how you would estimate time of death using rigor mortis. Estimating Time of Death using Rigor Mortis.

sherry
Download Presentation

Date: May 6, 2013

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Aim: SWBAT explain what causes algor mortis, and use algor mortis evidence to estimate time of death Date: May 6, 2013 Do Now: In one sentence, explain how you would estimate time of death using rigor mortis

  2. Estimating Time of Death using Rigor Mortis • Identify portion of body exhibiting (or not exhibiting rigor) • Use table to identify time period

  3. Agenda • Rigor Mortis • Estimation of time of Death • Factors affecting Estimate • Algor Mortis • Estimation of time of Death • Factors affecting Algor Mortis

  4. Rigor Mortis 12 hrs – peak rigor 48 hrs 0 hrs

  5. Factors Affecting Rigor Mortis • Temperature • Body Weight • Clothing • Illness • Exercise • Sun Exposure

  6. Factors Affecting Rigor Mortis • Can change estimate • Adjust estimate accordingly

  7. Rigor Mortis 12 hrs – peak rigor 48 hrs 0 hrs

  8. Estimating time of Death Using Rigor Mortis • Man found dead buried in snow. Rigor in the legs only. • Woman dies during the summer, exhibits no rigor.

  9. Practice Complete problems 6 – 9 on the worksheet.

  10. Rigor Mortis 12 hrs – peak rigor 48 hrs 0 hrs

  11. Review 6. 12 - 24 hours ago 7. 2-6 hours 8. Cannot be determined, more evidence needed 9. 24 – 48 hours

  12. Algor Mortis • Death Heat • Body Temp – Living 37 C (98.6 F) • Body fails, heat leaves body • Temp taken from liver • Estimate Time of Death

  13. Factors Affecting Algor Mortis • Environment • Temperature • Body Fat • Clothing

  14. Red Light • In your notebooks, answer the following question: What causes algor mortis?

  15. Estimating Time of Death – Algor Mortis • Body loses heat over time • Living Body Temperature – 37° C (98.6° F)

  16. Estimating Time of Death – Algor Mortis • A man is found on the side of the road. His body temperature is 32° C. How long has this man been dead? • 6 hrs 25 mins

  17. Steps: • Calculate how many degrees have been lost • Greater or less than 12 hrs? (9.36° C) • Calculate any time left over. • Multiply decimal by 60 to get mins

  18. Estimating Time of Death – Algor Mortis • A woman is found dead. Her body temperature is 28° C. How long has this woman been dead? • 11 hrs 32 mins

  19. Estimating Time of Death – Algor Mortis • A woman is found dead. Her body temperature is 20° C. How long has this woman been dead? • 31 hrs 38 mins

  20. Estimating Time of Death – Algor Mortis • Complete the worksheet problems

  21. Red Light • In your notebooks, write the steps you would take to estimate time of death using algor mortis.

More Related