Across
- 2. the upper two heart chambers (google)
- 3. high blood pressure
- 6. carries blood to the heart
- 8. Dioxide, A colorless, odorless gas that is present in the atmosphere and is formed when any fuel containing carbon is burned (dictionary.com)
- 12. small blood vessel in the microcirculation that allows blood to return from the capillary beds to drain into the larger blood vessels (wikipedia)
- 13. Node, specialized muscle tissue in the wall of the right atrium of the heart that acts as a pacemaker by producing a contractile signal at regular intervals (google)
- 14. any of various membranous structures (britannica)
- 16. Valve, One of the four valves of the heart it permits blood to flow one way only, from the left atrium into the left ventricle (medicinenet)
- 19. the two chambers of the heart that are involved in pumping blood
- 20. done without control
- 21. Artery, supply blood to the heart muscle
- 22. pair of spongy, air-filled organs located on either side of the chest (WebMD)
Down
- 1. primary site for control of blood flow (healthjade)
- 4. Artery, artery carrying blood from the right ventricle of the heart to the lungs for oxygenation (google)
- 5. removal of oxygen
- 7. any of the minute blood vessels that form networks throughout the bodily tissues (britannica)
- 9. carries blood away from the heart
- 10. main artery that carries blood away from your heart to the rest of your body (American heart association)Tricuspid Valve, prevent back flow of blood from the right ventricle into the right atrium during right ventricular contraction (google)
- 11. to supply something with oxygen
- 15. chest pain or discomfort caused when your heart muscle doesn't get enough oxygen-rich blood (American Heart Association)
- 17. to go higher
- 18. to go lower