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Author Topic: Is it possible to completely relax all our muscles?  (Read 2147 times)

Offline bizerl

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I've heard that muscles either contract, or relax but we can only create movement by contracting a muscle. So..
a) Is this correct?
b) If so, what would we look like if all of our muscles were relaxed at the same time?
c) What would happen if someone managed to simultaneously contract all their muscles at the same time? (I have an image of horrible muscle damage due to all the muscles pulling away from eachother).


 

Offline RD

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Re: Is it possible to completely relax all our muscles?
« Reply #1 on: 03/04/2013 07:36:49 »
 

Offline Bored chemist

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Re: Is it possible to completely relax all our muscles?
« Reply #2 on: 03/04/2013 19:33:34 »
Not breathing would be manageable medically.
No heartbeat and no blood pressure would be at least as big a problem.
It would be messy too, the bladder and bowels' sphincters are muscular- though that wouldn't worry you in the circumstances.
 

Offline cheryl j

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Re: Is it possible to completely relax all our muscles?
« Reply #3 on: 05/04/2013 03:08:28 »
In answer to your third question, the neurotoxin from Clostridium tetani causes sustained skeletal muscle contraction, and this is a painting of what it looks like. Rather unpleasant. In normal people the nervous system is wired so that contraction of one muscle often inhibits the nerve that contracts the antagonist muscle so that they don't occur at the same time or to the same degree.
« Last Edit: 05/04/2013 03:11:42 by cheryl j »
 

The Naked Scientists Forum

Re: Is it possible to completely relax all our muscles?
« Reply #3 on: 05/04/2013 03:08:28 »

 

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