Across
- 5. big muscle that causes chest to expand and contract
- 7. muscles between the ribs that cause them to move up and down
- 8. the correct word for windpipe
- 9. the muscle that bends the arm
- 10. attaches bone to bone at a joint
- 11. name of the joint that moves bones in one direction
Down
- 1. small sacs where gas exchange takes place
- 2. the muscle that straightens the arm
- 3. thigh bone
- 4. one of the two branches where the windpipe splits into two
- 6. covers bone at a joint to stop bone and bone rubbing together
- 8. attaches muscle to bone