Health Crossword Puzzle

123456789
Across
  1. 3. Process of breaking down food in the body
  2. 5. Chemical processes in the body to produce energy
  3. 8. Chemical substances that regulate body functions
  4. 9. Main nutrient source of energy
Down
  1. 1. The main organ of the nervous system
  2. 2. Nutrients needed in small amounts but essential
  3. 4. The body’s defense system against disease
  4. 6. Organ used for breathing
  5. 7. Resistance to a specific infection
  6. 8. Organ that pumps blood