Basic
Causes
Extra
100

When does Rigor Mortis occur? 

After death (approx 2 hours)

100

What is the main cause of rigor mortis?

Depletion of cells energy molecule, ATP

100

What does rigor mortis directly translate to?

"stiffness of death"

200

What is rigor mortis?

A change resulting in the stiffening of the body, after death, due to chemical changes

200

What are factors that can severely impact the onset and timeline of Rigor?

Temp, illness, activity before death, physical conditions the body was found

200

When does rigor end?

When autolysis takes place (self-digestion of cells)

300

What is rigor mortis characterized by?

Stiffening of the body

300

If the body is hot, does the rate of rigor increase, decrease, or stay the same?

Increase

300

How can forensic scientists use rigor?

To estimate time of death

400

What stage of death is rigor mortis?

4

400

If the body is cold, does the rate of rigor increase, decrease, or stay the same?

Decrease

400

Does rigor mortis only occur in humans?

No

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