Additionally, it lowers blood pressure by acting on the heart itself to reduce the rate, strength, and conduction speed of each beat. It is also used off-label as an effective preventive medication for migraine. It is a class 3 antianginal drug, and a class IV antiarrhythmic. It is a common adulterant of cocaine seized in the UK, and has been found to reduce cocaine cravings in rats, indicating it may prolong the high (see below).
This article is about the sign of death. For other uses, see Rigor mortis (disambiguation) . Rigor mortis (Latin: rigor stiffness, mortis of death) is one of the recognizable signs of death, caused by chemical changes in the muscles after death, causing the limbs of the corpse to stiffen.t the time of death, a condition called primary flaccidity occurs. Following this, the muscles stiffen in rigor mortis. All muscles in the body are affected. Starting between two to six hours following death, rigor mortis begins with the eyelids, neck, and jaw.
Rigor mortis, the stiffening of a body several hours after death, arises from a combination of two of the oldest definitions of death â cessation of the heartbeat and cessation of breathing.