D3.3

6. Hormone secreted by alpha cells in the pancreas to raise blood glucose levels.
7. The process of maintaining a steady internal body temperature near 37 degrees Celsius.
10. A chemical messenger transported by the blood to act on specific target cells.
12. The "master gland" that stores and releases hormones under hypothalamic control.
13. Hormone secreted by the thyroid gland to regulate metabolic rate and body temperature.
14. The gland responsible for monitoring blood glucose and secreting metabolic hormones.
15. The system of glands that secrete hormones directly into the bloodstream.
16. Widening of blood vessels near the skin to increase heat loss when hot.
17. A metabolic disorder characterized by the inability to effectively regulate blood glucose.

1. Narrowing of blood vessels near the skin to reduce heat loss when cold.
2. Hormone secreted by beta cells in the pancreas to lower blood glucose levels.
3. The brain region that acts as the control center for temperature and water balance.
4. A control mechanism that reverses a change to return a system to its set point.
5. A cell that possesses specific receptors for a particular hormone.
8. The ideal value or range at which a physiological variable is maintained.
9. A specialized type of fat tissue used for non-shivering thermogenesis.
10. The maintenance of a constant internal environment within physiological tolerance limits.
11. The storage form of glucose found in the liver and muscle cells.