Compléter The interaction functionVersion en ligne Complete the sentences par maria antonia Iglesias 1 involuntary muscular protects shapes helps contract nervous joints system receive move nervous tendons supports movements relax protects response In the interaction function we information and create a . There are three systems involved : system , skeleton and system . The system controls everything we do . The skeleton system our body and our internal organs . Bones are connected by . The muscular system our body , us to and internal organs . Muscles are connected to bones by . There are two important : voluntary and . Muscles and to move our body .