C3amiiWarraine C3amiiWarraine
  • 02-03-2017
  • Biology
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What does it mean when we say a muscle contracts involuntarily?

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IncredibleCaitlyn
IncredibleCaitlyn IncredibleCaitlyn
  • 02-03-2017
It means we don't have to think about it in order to do it. 

Example, the heart. The heart pumps all on its own. 

Example of voluntary muscle: The muscle on our arms and legs we must tell to move, they don't do it on their own. 
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