Bones
A group of bones forming the frame of the body is called the ___.
skeleton
Tissue that moves a part of the human body is called a ___.
muscle
skull
The 33 bones in the back that protect the spinal cord are the
Vertebrae
When a skeletal muscle contracts, it pulls on a ____ to move the bone.
Tendon
A joint that allows only back and forth movement is a ____ joint.
hinge
Bones have a hard outer layer and then a layer of ___ bone
spongy
What minerals make your bones strong and hard?
Calcium
A joint that allows side to side movement is a ____ joint.
pivot
Some bones are filled with soft, jelly-like material that produces new blood cells. This material is called
marrow
An injury to the ligaments and blood vessels that happens when a joint is twisted too far is called a ___.
Sprain
A joint that allows movement in many directions is a ___ joint.
ball and socket