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Across 3. Blood vessels that carry blood to the heart 4. Biological substance that improves immunity to a particular disease 5. Health care profession that deals with vision 8. Yellowish waxy substance secreted in the ear canal 9. Branch of medicine dealing with cancer (tumors) 13. The study of diseases of the digestive system 16. Arterial palpation of a heartbeat 17. Disease caused by diminished production of insulin 18. The study of diseases of the joints, soft tissue and connective tissues 19. A test that measures lung function

Down 1. Chronic high blood pressure 2. The study of diseases of the lung and respiratory tract 3. A form of dizziness 6. Decrease in the normal number of blood cells 7. Abnormal levels of lipids and/or lipoproteins 8. An artery that supplies the head and neck with oxygenated blood 10. Blood vessels that carry blood away from the heart 11. The study of diseases of the heart and blood vessels 12. Fainting 14. A waste product from the digestive tract 15. Abnormal esophageal reflux