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After death, respiration in organisms ceases to occur, depleting the corpse of oxygen used in the making of Adenosine triphosphate (ATP). ATP is no longer provided to operate the SERCA pumps in the membrane of the sarcoplasmic reticulum, which pump calcium ions into the terminal cisternae. This causes calcium ions to diffuse from the area of higher concentration (in the terminal cisternae and extracellular fluid) to an area of lower concentration (in the sarcomere), binding with troponin and allowing for crossbridging to occur between myosin and actin proteins.
Unlike in a normal muscle contraction, after death the body is unable to complete the cycle and release the coupling between the myosin and actin, creating a perpetual state of muscular contraction, until the breakdown of muscle tissue by digestive enzymes during decomposition. As part of the process of decomposition, the myosin heads are eaten off by bacteria, allowing the muscle contraction to release and the body to relax.
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What does it mean if you call someone a boring stiff?
it basically means that they are as boring as a dead person, as 'stiff' is slang for a dead body.
What does a dead body feel like before it becomes stiff?
Chemical changes in the blood after death cause a dead body to become stiff within hours after death. This stiffness is called rigor mortis. It usually goes away within 12 hours of onset.
When the extremities are stiff and rigid what kind of posturing is it?
Rigor mortis is dead stiff body, not really called posturing.
Do hamsters go stiff when dead?
Yes, when a hamster dies, its body may become stiff due to rigor mortis setting in. This is a natural process that can occur in any animal after death.
Can you revive a puppy after it is stiff?
Sadly, no. Once the dead puppy has become stiff, rigor mortis has set in and there is nothing that can be done to revive it.
Why are embaled bodies hard?
Embalming basically dehydrates the body and uses various chemicals to coat the body's tissues. Ever eaten a peice of beef jerky? That's a dead body. Dehydrated and stiff. Of course, the body naturally goes stiff after death when the muscles seize up and become a little like beef jerky.
What is the state of the body after death in which the muscles become stiff called?
rigor mortis
What are synonyms of the word corpse?
dead body, cadaver, carcass, stiff, remains, carrion, the deceased, roadkill
What is a sentence with the word stiff?
After sitting for too long, my back felt stiff and sore.
What word starts with s that means dead?
stiff
What does friar Lawrence say will happen when Juliet drinks the potion?
Friar Lawrence tells Juliet that the potion will make her appear as if she is dead. Her body will be cold and stiff with no sign of life for 42 hours.
If a hamster is stiff does it mean its dead?
Not necessarily. A stiff hamster could be asleep or in a state of shock. It is best to check for other signs of life (breathing, movement) before determining if the hamster is dead.
