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Across 1. Butterfly shaped gland located in front of the upper part of the trachea 4. High blood sugar 10. Female sex glands 11. Hormone secreted by the testes 12. Overactive thyroid gland; causes increased production of thyroid hormones 16. Organ situated in the center of the upper chest behind the sternum; atrophies during puberty 17. Condition resulting from the oversecretion of somatotropin before puberty 19. Condition resulting from the undersecretion of somatotropin 20. Enlarged thyroid gland 21. Located above each kidney; secrete epinephrine and norepinephrine

Down 2. Chronic disease cuased by decreased secretion of insulin 3. The "master gland"; located within the brain and responsible for normal body growth 4. Low blood sugar 5. Hormone secreted by the ovaries 6. Four small glands located behind and attached to the tyroid gland; regulate the amount of calcium in the blood 7. Male sex glands 8. Chemical substances that act like messenger molecules in the body 9. Underactive thyroid gland which develops in early infancy or childhood 12. Underactive thyroid gland and a deficiency of thyroid hormones 13. Temporary organ that transfers oxygen and nutrients from mother to fetus 14. Secreted by the pancreas and responsible for maintaining blood levels of glucose 15. Glandular organ located behind the stomach; Secretes the hormone insulin 18. Required by the thyroid gland to produce its hormones 20. Severe form of hyperthyroidism