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the structure made of bones in a person's body
skeleton
a part of the body that does a specific job
organ
to become less tight
relax
Inside your body there is a hard structure called a ___________.
Inside your body there is a hard structure called a skeleton.
Babies have 300 bones. Adults have 206 bones.
Bones move when muscles _______ and ________.
Bones move when muscles contract and relax.
As a frame for your body, bones _______ it and give it its _______.
As a frame for your body, bones support it and give it its shape.
Bones move when muscles ________ and ________.
Bones move when muscles contract and relax.