Question 1

Describe the ways to categorize time of death:

Accepted Answer

1-Physiological
2-Estimated
3-Legal

Question 2

Describe the ways to categorize time of death: PHYSIOLOGICAL.

Accepted Answer

Physiological:
the time when the decedent's vital functions ceased

Question 3

Describe the ways to categorize time of death: ESTIMATED

Accepted Answer

Estimated:
the time the medical examiner estimates that the death occurred

Question 4

Describe the ways to categorize time of death: LEGAL

Accepted Answer

Legal:
The time of death was recorded on the death certificate based on when the body was found or physically pronounced dead.

Question 5

Describe the body conditions that help scientists estimate time of death AND when they occur:

Accepted Answer

1-Algor mortis
2-Rigor mortis
3-Livor mortis
4-clouding of the corneas
5-Decomposition
6-Insect activity

Question 6

Describe the body conditions that help scientists estimate the time of death AND when they occur:
1-Algor mortis:

Accepted Answer

1-Algor mortis: the body begins cooling after death to match the surrounding temperature, 0-24 hours

Question 7

Describe the body conditions that help scientists estimate the time of death AND when they occur:
1-Rigor mortis:

Accepted Answer

2-Rigor mortis:

Rigor mortis typically begins 2-4 hours after death. Rigor is first observed in the head and neck and then moves to the arms and legs. Full rigor is present throughout the body in 8–12 hours and “fixes” the body in the position assumed at death. After about 36–48 hours, rigor fades as decomposition begins.

Question 8

Describe the body conditions that help scientists estimate the time of death AND when they occur: 

3- Livor mortis:

Accepted Answer

3-Livor mortis: 

Pooling of the body following death causes a purplish red discoloration of the skin, also called lividity. Blood travels to the ground. Early signs of this blood settling occur within the first 2 hours of death. Full signs occur within 5 hours, and lividity is fixed in place in 8–12 hours.

Question 9

Describe the body conditions that help scientists estimate the time of death AND when they occur: 

4- Clouding of the cornea:

Accepted Answer

4-Clouding of the corneas: 

3-4 hrs. The corneas (the clear part of the eyes) become milky or cloudy.

Question 10

Describe the body conditions that help scientists estimate the time of death AND when they occur:
5-Decomposition:

Accepted Answer

5-Decomposition: 

36-48 hrs. Body turns greenish in color and may swell/ bloat as bacteria breaks down and tissues release gas, also a nasty smell.

Question 11

Describe the body conditions that help scientists estimate the time of death AND when they occur:
6-Insect activity

Accepted Answer

6-Insect activity: 

1-145 hrs. It can provide clues about how long a person has been dead, and the presence of eggs, larvae, or full-grown bugs provide a time stamp for how long the body has been decaying.

Question 12

What are body farms?

Accepted Answer

Body farms are research compounds where sciences study what happens to human bodies after death

Question 13

At a crime scene, dated texts, emails, broken clock, dishes in the sink are referred to as scene markers. What do they help establish?

Accepted Answer

Establish a timeline

Question 14

Convert 25°C into F. Show your work.

Accepted Answer

(25C x 1.8) +32=77

Question 15

Which organs are used to measure the body's core temperature and why?

Accepted Answer

The body core temperature can be measured with a hypodermic probe of the liver or brain because of their large mass and density

Question 16

What do forensic entomologists do?

Accepted Answer

Forensic Entomologists are scientist who study arachnids, mites, spiders, ticks, and insects, such as flies, as they pertain to criminal investigations

Question 17

What insects are found at sites of decay?

Accepted Answer

Blowflies

PBS UNIT (1.2.2) – M

PBS UNIT (1.2.2) – MEDICAL INVESTIGATION STUDY GUIDE EXAM #2 (MICHELLE)

Question	Answer
Describe the ways to categorize time of death:	1-Physiological 2-Estimated 3-Legal
Describe the ways to categorize time of death: PHYSIOLOGICAL.	Physiological: the time when the decedent's vital functions ceased
Describe the ways to categorize time of death: ESTIMATED	Estimated: the time the medical examiner estimates that the death occurred
Describe the ways to categorize time of death: LEGAL	Legal: The time of death was recorded on the death certificate based on when the body was found or physically pronounced dead.
Describe the body conditions that help scientists estimate time of death AND when they occur:	1-Algor mortis 2-Rigor mortis 3-Livor mortis 4-clouding of the corneas 5-Decomposition 6-Insect activity
Describe the body conditions that help scientists estimate the time of death AND when they occur: 1-Algor mortis:	1-Algor mortis: the body begins cooling after death to match the surrounding temperature, 0-24 hours
Describe the body conditions that help scientists estimate the time of death AND when they occur: 1-Rigor mortis:	2-Rigor mortis: Rigor mortis typically begins 2-4 hours after death. Rigor is first observed in the head and neck and then moves to the arms and legs. Full rigor is present throughout the body in 8–12 hours and “fixes” the body in the position assumed at death. After about 36–48 hours, rigor fades as decomposition begins.
Describe the body conditions that help scientists estimate the time of death AND when they occur: 3- Livor mortis:	3-Livor mortis: Pooling of the body following death causes a purplish red discoloration of the skin, also called lividity. Blood travels to the ground. Early signs of this blood settling occur within the first 2 hours of death. Full signs occur within 5 hours, and lividity is fixed in place in 8–12 hours.
Describe the body conditions that help scientists estimate the time of death AND when they occur: 4- Clouding of the cornea:	4-Clouding of the corneas: 3-4 hrs. The corneas (the clear part of the eyes) become milky or cloudy.
Describe the body conditions that help scientists estimate the time of death AND when they occur: 5-Decomposition:	5-Decomposition: 36-48 hrs. Body turns greenish in color and may swell/ bloat as bacteria breaks down and tissues release gas, also a nasty smell.
Describe the body conditions that help scientists estimate the time of death AND when they occur: 6-Insect activity	6-Insect activity: 1-145 hrs. It can provide clues about how long a person has been dead, and the presence of eggs, larvae, or full-grown bugs provide a time stamp for how long the body has been decaying.
What are body farms?	Body farms are research compounds where sciences study what happens to human bodies after death
At a crime scene, dated texts, emails, broken clock, dishes in the sink are referred to as scene markers. What do they help establish?	Establish a timeline
Convert 25°C into F. Show your work.	(25C x 1.8) +32=77
At a crime scene, a coroner measured a decedent’s rectal temperature to be 75°F at noon. Using the Glaister equation (98.4 – measured rectal temperature/1.5 = approximate hours since death), determine the time of death.
Which organs are used to measure the body's core temperature and why?	The body core temperature can be measured with a hypodermic probe of the liver or brain because of their large mass and density
What do forensic entomologists do?	Forensic Entomologists are scientist who study arachnids, mites, spiders, ticks, and insects, such as flies, as they pertain to criminal investigations
What insects are found at sites of decay?	Blowflies
Complete the table for the timeline of development for blue bottle flies:

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