| A | B |
|---|
| cardiac muscle | the muscle tissue that makes up the heart |
| involuntary muscle | a muscle that moves automatically, without your thinking about it |
| joints | the places in the body where two or more bones are joines together, usually in a way that allows them to move |
| ligaments | bands of tissue that hold bones together |
| marrow | the soft center of hones where read blood cells are made |
| tendons | bands of tissue that attach muscles to bones |
| voluntary muscles | a muscle that moves when you decide to move it |
| bones | made of calcium and phosphorus |
