Across
- 5. occurs when a system's output acts to reduce or dampen the processes that lead to the output of that system, resulting in less output
- 9. the breakdown of food into smaller pieces without chemical change to the food molecules
- 12. state of steady internal, physical, and chemical conditions maintained by living systems
- 16. system of organs that includes the heart, blood vessels, and blood
- 18. large multinucleated cells whose most obvious histological feature is cross-striations.
- 19. a complex network of glands and organs
- 20. composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts.
Down
- 1. the body's chemical messengers, sending signals into the bloodstream and tissues
- 2. the tissues, glands, and organs involved in producing offspring
- 3. blood vessels located throughout your body that collect oxygen-poor blood and return it to your heart
- 4. distribute oxygen-rich blood to your body
- 6. an organ that makes one or more substances
- 7. form the connection between the vessels that carry blood away from the heart and the vessels that return blood to the heart.
- 8. your body's central framework.
- 10. made up of the gastrointestinal tract—also called the GI tract or digestive tract—and the liver, pancreas, and gallbladder
- 11. includes organs that facilitate the removal of nitrogenous wastes from the body
- 13. transmits signals between the brain and the rest of the body, including internal organs.
- 14. occurs in nature when the product of a reaction leads to an increase in that reaction.
- 15. composed of specialized cells called muscle fibers.
- 17. when food travels from your mouth into your digestive system, it's broken down by digestive enzymes that turn it into smaller nutrients that your body can easily absorb.