Across
- 4. Relaxation phase of the heart beat
- 11. The lower chamber of the heart that recieves deoxygenated blood
- 12. Record of electrical activities in the heart
- 13. valve, Valve through which deoxygenated blood flows to the pulmonary artery
- 14. Valve situated between the right atrium and the right ventricle
- 15. Largest vein in the body
Down
- 1. Lower right chamber that recieves oxygenated blood from the left atrium
- 2. Passage for deoxygenated blood to the lungs
- 3. Valve that between the left ventricle and the left atrium
- 5. Upper left chamber of the heart that recieves oxygenated blood
- 6. Muscle fibres connecting the atria with the ventricles
- 7. Brings blood from the lower half portionto the heart
- 8. The upper chamber of the heart that recieves deoxygenated blood
- 9. A vessel through which deoxygenated blood enters the heart from the upper region of the body
- 10. Special nervous tissue in the right atrium that begins the heart beat