Across
- 2. tiny blood vessels that have thin walls
- 3. The bodily system that consists of the bones, their associated cartilages, and the joints
- 5. A self-regulating process by which biological systems maintain stability while adjusting to changing external conditions
- 6. A type of blood vessel that return deoxygenated blood from your organs back to your heart
- 7. Groups of organs and tissues that work together to perform important jobs for the body
- 8. The tissues, glands, and organs involved in producing offspring
- 11. Chemical substances that act like messenger molecules in the body
- 13. Consist of a single muscle cell
- 15. The network of organs and tissues that help you breathe
- 16. When acids, enzymes and other secretions break down the food we eat into nutrients
- 18. A passive biological system that removes excess, unnecessary materials from the body fluids of an organism
- 19. When your body mechanically breaks down food, grinding or smashing it into smaller pieces
Down
- 1. Sequence by which food is broken down and chemically converted so that it can be absorbed by the cells of an organism and used to maintain vital bodily functions
- 4. An organ that makes hormones that are released directly into the blood and travel to tissues and organs all over the body
- 9. The system that contains the heart and the blood vessels and moves blood throughout the body
- 10. The organ system responsible mainly for coordination of bodily reactions, organ monitoring, and information processing
- 12. The blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body
- 14. Composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts
- 17. An organ system responsible for providing strength, keeping up the balance, maintaining posture, allowing movement, and producing heat
- 20. An organ which produces and releases substances that perform a specific function in the body