Across
- 1. hormone that causes excess blood glucose to be taken up by the liver, which stores the glucose as glycogen; works with glucagon to control the level of glucose in the blood
- 3. hormone that stimulates the liver to break down glycogen into glucose and release it back into the blood; works with insulin to control the level of glucose in the blood
- 6. basic unit of structure and function of living things
- 8. fluid connective tissue that circulates throughout the body through blood vessels
- 9. something that triggers a behavior or causes a reaction in an organism
- 10. response to an event increases the likelihood of the event continuing; includes the production of milk in nursing mothers
- 12. main organ of the central nervous system that serves as the control center of the nervous system and of the body as a whole
- 14. simple sugar that all living things use to store and transport energy
- 16. organ system that consists of the brain, spinal cord, and a complex network of nerves that carries electrical messages throughout the body
- 20. organ system that exchanges gases with the outside air; brings oxygen into the body and releases carbon dioxide into the atmosphere
- 21. system of glands that secrete chemical messenger molecules called hormones into the blood
- 22. response to a stimulus that keeps a variable close to a set value; includes regulating body temperatures in humans
- 23. organ system that removes excess water and waste from the body; includes the large intestine, liver, skin, lungs, and kidneys
- 24. chemical messenger molecule
Down
- 2. organ of the respiratory system in which gas exchange takes place between the air and blood
- 4. process in which substances such as nutrients pass into the bloodstream
- 5. female reproductive organ where an embryo or fetus grows and develops until birth
- 7. organ of digestion and excretion that secretes bile to help digest fat and break down excess amino acids and toxins in the blood
- 9. way of gaining knowledge about the natural world that depends on evidence, reasoning, and repeated testing
- 11. long, tube-like organ that forms part of the complex network of vessels that run through the body and transport blood to all the body’s cells
- 13. group of organs that work together to perform a particular function
- 15. gland near the stomach that secretes digestive enzymes into the small intestine and secretes the hormone insulin into the bloodstream
- 17. liquid waste product of the body that is formed by the kidneys and excreted by the other organs of the urinary system
- 18. main organ of the excretory system that filters blood and forms urine
- 19. structure composed of two or more types of tissues that work together to perform a particular function