Inside the body

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Across
  1. 2. One of the bony segments of the spinal column.
  2. 4. Organ where digestion of food begins.
  3. 5. Vital organ that detoxifies chemicals and produces bile.
  4. 9. Organ that filters blood and produces urine.
  5. 10. A unit of heredity made of DNA.
  6. 12. The smallest structural and functional unit of an organism.
  7. 13. Bony structure that forms the head.
  8. 14. Life-sustaining fluid circulated by the heart.
  9. 17. Vessel carrying blood away from the heart; a major route.
  10. 18. Vessel carrying blood toward the heart.
  11. 19. A group of similar cells that perform a specific function.
  12. 21. The body's command center.
  13. 22. A general term for a tube that carries blood (artery, vein, capillary).
Down
  1. 1. The liquid component of blood.
  2. 3. Rigid organ part of the vertebrate skeleton.
  3. 5. Primary organ for respiration.
  4. 6. Tissue that contracts to produce movement.
  5. 7. The internal framework of the body.
  6. 8. The muscular organ that pumps blood.
  7. 11. The food pipe between the pharynx and the stomach.
  8. 15. Where two bones meet (e.g., knee or elbow).
  9. 16. Bundled fibers that transmit electrical impulses.ORGAN A self-contained part of an organism (e.g., heart or liver).
  10. 20. The backbone or vertebral column.