Across
- 3. a self-regulating process by which an organism can maintain internal stability while adjusting to changing external conditions.
- 6. amplifying or magnifying the change or output.
- 7. a passive biological system that removes excess, unnecessary materials from the body fluids of an organism.
- 10. chemical substances that act like messenger molecules in the body
- 12. The system that contains the heart and the blood vessels and moves blood throughout the body.
- 14. a process in which the outputs of a system are circled back and used as inputs.
- 15. large multinucleated cells whose most obvious histological feature is cross-striations.
- 16. blood vessels that carry oxygen-poor blood to your heart.
- 17. a normal biological response in which the effects of a reaction slow or stop that reaction.
- 18. breaks down the food we eat into tiny parts to give us fuel and the nutrients we need to live.
- 19. the network of organs and tissues that help you breathe. Also the muscles that power your lungs are apart of this
- 20. A blood vessel that carries blood from the heart to tissues and organs in the body.
Down
- 1. The glands and organs that make hormones and release them directly into the blood so they can travel to tissues and organs all over the body.
- 2. delicate blood vessels that exist throughout your body.
- 4. An organ that makes one or more substances, such as hormones, digestive juices, sweat, tears, saliva, or milk
- 5. transmits signals between the brain and the rest of the body, including internal organs.
- 8. your body's support structure. It gives your body its shape and allows movement
- 9. composed of cells that have the special ability to shorten or contract in order to produce movement of the body parts.
- 11. an organ system consisting of skeletal, smooth, and cardiac muscle.
- 13. the biological system made up of all the anatomical organs involved in sexual reproduction.