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6. How many chambers are there in the heart?
7. What is used to keep open an artery if it begins to narrow and restrict blood flow?
8. How many separate circulation systems are there in the body and what are they for?
- 2. One for the lungs and one for the body
- 2. One for the brain and one for the body
- 3. One for the brain, one for the lungs and one for the digestive system
9. How does blood flow through the heart?
- Vein to atrium to ventircle
- Vein to ventricles to atrium
- Artery to atrium to ventricle
- Artery to ventricles to atrium
10. How is oxygen transported around the body?
- In white blood cells
- In red blood cells
- In blood plasma
11. What are platelets?
- Small fragments of cell
- Ribosomes
- Empty cells
12. What do white blood cells do?
- They cause blood clots
- They form part of the body’s defence system against microorganisms
- They carry carbon dioxide around the body
13. What is the name of the blood vessels that carry blood to and from the lungs?
- Pulmonary Vein and Artery
- Coronary Vein and Artery
- Aortic Vein and Artery
14. What does haemoglobin combine with oxygen to form?
- oxyhaemoglobin
- oxygen-haemoglobin
- phagocyte
15. How is carbon dioxide transported from organs to the lungs?
- In blood plasma
- In white blood cells
- In the bronchioles
16. What is the heart?
- an organ
- a tissue
- an organ system
17. What is the name of the main artery carrying blood from the heart to the body?
- Pulmonary Artery
- Aorta
- Hepea
18. What does the circulatory system do?
- Transport substances around the body
- Provide enzymes for digestion
- Produce hormones