Across
- 1. The body's largest organ (by surface area)
- 5. Gland that regulates metabolism
- 8. The process of cell division for growth and repair
- 9. Fluid that circulates in the lymphatic system
- 11. Tiny air sacs in the lungs where gas exchange occurs
- 12. Largest part of the human brain
- 13. The system responsible for transporting blood throughout the body
Down
- 2. The functional unit of the kidney
- 3. Type of muscle found in the heart
- 4. Bone in the upper arm
- 6. The tube that carries food from the mouth to the stomach
- 7. Protein that carries oxygen in red blood cells
- 10. Connective tissue that connects muscles to bones
- 12. The basic unit of life