Across
- 2. a place where two bones come together
- 6. ropelike tissue that connects muscles to bones
- 10. the organ in animals where oxygen and carbon dioxide pass between the atmosphere and the blood
- 11. the system of lungs and connecting tubes that transports oxygen to and carbon dioxide from the blood
- 13. where sensory impulses pass through the brain and spinal cord
Down
- 1. the system of blood vessels and organs that transports blood to all the cells in the body
- 3. the system of bones in the human body which provide support, protection, and movement
- 4. part of the central nervous system protected by the skull
- 5. tissue that can contract and produce movement
- 7. a gas produced by plants during photosynthesis. Oxygen is used by all plants and animals during cellular respiration
- 8. a blood vessel that carries oxygen-rich blood from the heart to the body
- 9. a communication cell found in the brain and nervous system
- 12. living tissue organized into a system called a skeleton that grows and changes shape as an organism grows
