Our body: BONES AND MUSCLES
3.2. Types of muscles
3.2. Types of Muscles
LISTEN AND READ
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