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.
When a source has no page numbers, in-text citations for it can just include the author's name. The author-only in-text citation can be placed in parentheses or be part of the sentence in which the source is quoted or paraphrased. Here are some examples from the 7th Edition MLA Style Guide:
This is a guide for MLA Style. It is based on the Modern Language Association of America's MLA Handbook for Writers of Research Papers, Seventh Edition. If a book has no author's or editor's name on the title page, begin the citation with the title. Do not use Anonymous or Anon.