Across
- 2. large vein that brings deoxygenated blood into the heart (TWO WORDS)
- 6. phrase when the heart relaxes and the heart fills up with blood
- 7. prevent the backflow of blood
- 10. the chambers in the heart that pump blood out of the heart
- 11. condition where there is a low red blood cell count
- 13. hormone that causes the blood vessels to contract reducing the flow of blood
- 14. to do with the lungs
Down
- 1. a hormone that makes the heart beat faster
- 3. process that increases blood flow to active areas (TWO WORDS)
- 4. when the lumen of the blood vessel widen
- 5. distributes blood within the organs
- 8. fluid part of the blood that transports substances
- 9. pigment that that gives red blood cells their colour and transports oxygen
- 10. carries blood to the heart
- 12. carries blood away from the heart