3.2. Types of muscles

IDevice Icon 3.2. Types of Muscles

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We divide muscles into two groups:

  • We move our voluntary muscles when we want to. The muscles in our arms are voluntary muscles.
  • The involuntary muscles move by themselves. We do not control their movements. For instance, the heart is a muscle; it moves all the time.



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Andrés Egea - Yolanda Marcos 2008