Across
- 3. Oxygen is a colourless, odourless, tasteless gas essential to living organisms
- 5. the membrane enclosing the heart, consisting of an outer fibrous layer and an inner double layer of serous membrane.
- 7. Small vein
- 8. any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body.
- 11. A heart murmur is a blowing, whooshing, or rasping sound heard during a heartbeat
- 12. the main artery of the body, supplying oxygenated blood to the circulatory system.
- 13. Instrument to measure blood pressure
- 14. the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood
Down
- 1. The atrium is one of the two upper chambers in the heart that receives blood from the circulatory system
- 2. Muscular middle layer of the heart
- 4. any of the fine branching blood vessels that form a network between the arterioles and venules
- 6. Inner lining of the heart
- 7. One of two lower chambers of the heart
- 9. the beat of the heart as felt through the walls of the arteries
- 10. the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries.