why?? and for how long ???
serious answers plz !!thanks
2006-08-02 23:03:17 · 9 answers · asked by Dr Surabhi :) 3 in Science & Mathematics ➔ Biology
I think after 3 hrs of death the muscles becomes inactive... that's when rigor mortise sets in and by the time its 6 hrs beyond the death til the body becomes totally stiff.
That reminds me you should red the book " Stiff - curious lives of Human caveders" its all about post mortems.
BTW once a person is dead ...it really should not matter if his muscles are active or not...... Hope u don't murder me for this.
2006-08-04 22:45:40 · answer #1 · answered by vinay_talks 5 · 1⤊ 0⤋
Yes and no!
A muscle is made of fibres that contract under the control of electrical impulses issued by the brain.
If the brain is not working, the muscle will not contract.
However, if you take out a muscle of a body, (ie a frog leg after dissection) and apply some small voltage across, it will contract for sometimes. To continue to function, we also need the fluids that release the muscle. It is a complex environment, where the oxygen of the blood plays an important role. Remove the supports, the chemicals, the oxygen and so on, and the muscle "dies".
See it as a hydraulic jack: it can always work, but if you take out the oil, it does not work.
2006-08-03 06:15:53 · answer #2 · answered by just "JR" 7 · 0⤊ 0⤋
A muscle will contract as long as it has the requirements for contraction, mainly ATP (cellular energy source) and calcium ions. It is the presence of calcium ions that allow for the protein chains inside the muscle cells to cause contraction. It is the ATP that allows for the chains to pull on one another to shorten the muscle. Normally Calcium is released in response to a nerve impulse. If someone is dead, the nerve impulses will eventually stop. But due to lack of circulation due to a dead body, the cellular compartments that store the calcium start to break down, releasing the calcium and causing the muscles to shorten. As long as there is a supply of ATP, the muscles will contract (rigor mortis). This will last 4-5 hours or so, until the ATP is gone, and the cells begin to degrade even further. After rigor mortis, the muscles will no longer contract.
2006-08-03 12:00:51 · answer #3 · answered by CK 1 · 0⤊ 0⤋
yes, the muscle of a person after death remains active only for sometime. in that time the organs of that person like eyes, kidneys etc can be taken out for transplanting to a needy one. when the creatine phosphate is exhuasted and no more ATP is available, the muscle stops responding and the person dies biologically.
2006-08-04 01:24:30 · answer #4 · answered by Anonymous · 0⤊ 0⤋
all tissues in the body remain somewhat active after someone dies, for a period of time anyway....ie. organ donation, transplanting the organs/ muscle tissue from the deceased to a living person in need
2006-08-04 07:14:53 · answer #5 · answered by jaredtcampbell 2 · 0⤊ 0⤋
maybe. when brains die, the person is died to. but some cells can be alive if they can access to oxygen or if not, they can bear lack of oxygen for 2/3 minutes. so muscels, hearth, liver and etc can remain alive for 2/3 minutes after death.
2006-08-04 06:24:18 · answer #6 · answered by peyman r 2 · 0⤊ 0⤋
Yes I think so.
I heard about ears of humans twitching after they had been cut off and eyelids which can blink after the head being cut off. Or is that the nerves working?
2006-08-03 06:53:30 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Until rigor mortis sets in..hard to tell exactly how long
2006-08-03 06:07:33 · answer #8 · answered by Janet K 4 · 0⤊ 0⤋
because body does not die sddenly it will die after three to four hours.if body dies suddenly the smell would come.
2006-08-03 06:46:53 · answer #9 · answered by Abhi 2 · 0⤊ 0⤋