1. After death, the muscles of the body become very stiff and inextensible. This phenomenon is referred to as rigor mortis, and the muscles are said to be in a state of rigor.
(b) Would your muscles be likely to go into rigor faster if you were to die while racing to class, or while sitting in lecture? Explain.© BrainMass Inc. brainmass.com October 24, 2018, 7:40 pm ad1c9bdddf
Biochemical Basis of Rigor Mortis
When you die, oxidative phosphorylation comes to a halt once oxygen runs out in the cells. Therefore, ATP production stops and as a result, cellular processes requiring free energy stop.
Keep that in mind as we go.
In order to understand rigor mortis, we must understand the contraction cycle involving myosin and actin.
First, an action potential arrives at the neuromuscular junction, causing a wave of depolarization in the T-tubule system ...
Criminal Investigation: Time of Death
The time of death relates directly to whether the suspect could have been at the scene and to the sequence of multiple deaths. It is also important to the victim's family in settling insurance claims and Social Security and pension payments (Orthmann and Hess, 2012).
A body with a gunshot wound to the head has been found in an apartment. The room temperature is 72 degrees and the blood on the body and near the body has dried. From the information provided, can investigators estimate the time of death? The body is completely stiff in both the small and large muscle groups. No noticeable decomposition has taken place.
Why do changes happen to the human body after death?
How long does it take for the body to show rigor mortis?
How long after rigor mortis is fixed before it dissipates?
What are the changes that a body undergoes immediately after death?
What further changes does the body undergo three hours after death?
What further changes does the body undergo 24 hours after death?
Discuss how knowledge of this information helps in a criminal investigation.