Body Systems and Homeostasis

2. movement of materials throughout body
4. Raises blood glucose levels, opposite from Insulin
6. Microscopic vessel through which exchanges take place between the blood and cells of the body
10. The absorption of oxygen from the atmosphere into the blood takes place here
12. absorbs most of the nutrients from food
13. Chemicals that cause electrical activity in another neuron
17. Main organ of the respiratory system
18. Chemical messengers that are produced in one tissue and affect another
19. Stores urine
20. Hormone released by the pancreas that lowers blood sugar

1. environmental events
3. A tendency to maintain a balanced or constant internal state
5. Hormones/chemicals are secreted by
7. catch and trap the nutrients needed for absorption
8. Filters blood, produces urine
9. the basic building block of the nervous system
11. elimination of waste
14. absorb nutrients into the bloodstream to be taken to all cells in the body
15. An abnormal state in which the body is not functioning normally
16. blood pumping organ