Some of the human skeleton functions.

Skull surrounds the ......................

Backbone is actually a stack of smaller bones called ..............................

A bigger cage, made of..............., protects your heart and lungs.

A spinal cord is a thick bundle of ....................

A spinal cord is connects your ..................... to the rest of your body.

A .................. is wherever two bones meet.

A .................. is wherever a muscle and bones meet.

Joints make our skeleton flexible, so we can...............

The .................. joints (like in our hips, it let our legs swing in every direction).

The ...................... joints (like in our knees and arms to swing around or bend).

..................... is a smooth cushion of cartilage (slippery) over the end of each bone (joint) that let bones swing smoothly.

.......................... hold bones together but stretch enough to let them swing freely.

A ..............................happens because of sudden stops and starts can damage ligaments.

..........................happens if players collide, one may twist an arm bone out of its socket.

.........................,inflammation or swelling of one or more joints) can make synovial fluid disappear, cartilage wear away and bones scrape together