What term is used to describe the Rigor mortis condition in deceased individuals?

The term "Rigor mortis" refers specifically to the process of post-mortal rigidity, which describes the stiffening of the muscles after death. This phenomenon occurs as a result of biochemical changes in the muscle tissue once the body no longer receives blood flow and oxygen, leading to the depletion of ATP (adenosine triphosphate) necessary for muscle function.

As rigor mortis sets in, the muscles start to harden and can give a characteristic stiffened appearance to the body. This rigidity typically begins a few hours after death and can last for a certain period before the muscles begin to relax again as cellular breakdown continues. Understanding this process is crucial for forensic investigators as it can provide valuable information about the timing of death, which can be important in a medicolegal context.

The other terms mentioned do not accurately encapsulate the specific nature of rigor mortis, with options referring instead to muscle relaxation or general decay, which are not aligned with the definition and process of rigor mortis.