rigor mortis

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5 Terms

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what is rigor mortis

rigidity of the body after death

2
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when does rigor mortis peak

10-12 hours after death

3
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what is rigor mortis due to

prolonged contraction of skeletal muscle

4
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what happens at death that causes rigor mortis

release of ACh is uncontrolled which causes high intracellular Ca+

5
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at death

there is no ATP so myosin head cannot detach; no muscle relaxation

-cant break cross bridge

-SR Ca+ pumps no longer work