| rigor | Stiffening of muscle as a result of high calcium levels and ATP depletion, so that actin myosin links are made, but not broken. (18 Nov 1997) |
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| rigor mortis | Muscular rigidity which develops in the cadaver usually from 4 to 10 hours after death and lasts 3 or 4 days. (12 Dec 1998) |
| acid rigor | Coagulation of muscle protein induced by acids. (05 Mar 2000) |
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| calcium rigor | Arrest of the heart in the fully contracted state as a result of poisoning with calcium. (05 Mar 2000) |
| cold-rigor point | The degree of lowered temperature at which the activity of a cell ceases and the cell passes into the narcotic or hibernating state. (05 Mar 2000) |
| myocardial rigor mortis | Irreversible contraction of the left ventricle of the heart as a complication seen in the early period of cardiopulmonary bypass and now avoided by appropriate cardioplegic solutions. Synonym: myocardial rigor mortis, stone heart. (05 Mar 2000) |
| heat rigor | Coagulation of muscle protein induced by heat. (05 Mar 2000) |
| heat-rigor point | <cell biology> The degree of elevated temperature at which coagulation of protoplasm occurs with death of the cell. (05 Mar 2000) |