Rigor mortis: Literally, the stiffness of death. The rigidity of a body after death. Rigor mortis is a good example of a Latin term (one in this case that was coined in the 19th century) remaining intact in contemporary medical usage (and crime writing).
Rigor mortis is due to a biochemical change in the muscles that occurs several hours after death, though the time of its onset after death depends on the ambient temperature. The biochemical basis of rigor mortis is hydrolysis in muscle of ATP, the energy source required for movement. Without ATP, myosin molecules adhere to actin filaments and the muscles become rigid.
Library > Literature & Language > Dictionary ( mÃƒÂ´r ' tÃ„Âs ) n. Muscular stiffening following death. [Latin : rigor , stiffness + mortis , genitive of mors , death.]
Learn what rigor mortis is and why it happens. ... A few hours after a person or animal dies, the joints of the body stiffen and become locked in place.
noun the stiffening of the body after death. Origin: 1830Ã¢â‚¬â€œ40; < Latin: literally, stiffness of death :10 :09 :08 :07 :06 :05 :04 :03 :02 :01 Rigor mortis is always ...
Once the heart stops beating, blood collects in the most dependent parts of the body (livor mortis), the body stiffens (rigor mortis), and the body begins to ...
The causes of rigor mortis stem from the way muscles move. Learn about the causes of rigor mortis and see how chemistry affects postmortem stiffness.