anatomy and physiology

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