Across
- 2. protects the bones from rubbing against each other at the joints
- 4. carry blood to all the cells of the body.
- 8. another name of backbone.
Down
- 1. type of joint that allows movement only in one direction.
- 3. the two upper chambers of the heart
- 5. a component of skeletal system.
- 6. muscles muscles present in the heart.
- 7. a single long bone in the upper part of the leg.