Across
- 5. test that checks heart function, measurement of electrical activity of heart
- 9. clear fluid carries cells that help fight infections and other diseases.
- 12. provides the functional blood supply to all body tissue
- 13. prevent the backflow of the blood during systole
- 15. biological molecule that acts as a catalyst
- 16. limits or decreases changes to a system
Down
- 1. a substance acted upon (as by an enzyme)
- 2. carries de-oxygenated blood from the heart to the lungs
- 3. the innermost layer of blood vessel
- 4. containing organs that includes the heart, blood vessels for transport
- 6. molecules very similar to the substrate molecules bind to the active site and prevent binding of the actual substrate.
- 7. region of an enzyme where reaction occurs
- 8. immune cell, ingest foreign material, and remove dead cells.
- 10. rapid, irregular, and unsynchronized contraction of muscle fibers in the heart
- 11. gel that contains immobilized enzyme
- 14. blood vessels taking blood close to almost every cell in the body