Biology - B3.2.1 The Blood System 5.0 / 5 based on 1 ratingTeacher recommended ? BiologyCirculationGCSEAQA Created by: MillieCreated on: 10-04-13 18:45 What does the circulatory system do? Transport substances around the body 1 of 18 How many chambers are there in the heart? 4 2 of 18 What is the heart? an organ 3 of 18 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 4 of 18 How does blood flow through the heart? Vein to atrium to ventircle 5 of 18 Which vessel has thick walls containing muscle and elastic fibre? Artery 6 of 18 Where are valves found? Veins 7 of 18 What do valves do? Prevent back-flow of blood 8 of 18 What is used to keep open an artery if it begins to narrow and restrict blood flow? Stent 9 of 18 What is the name of the main artery carrying blood from the heart to the body? Aorta 10 of 18 What is the vena cava The vein that carries blood from the body to the heart 11 of 18 What is the name of the blood vessels that carry blood to and from the lungs? Pulmonary Vein and Artery 12 of 18 What is blood made up of? Plasma, platelets and red and white blood cells 13 of 18 How is carbon dioxide transported from organs to the lungs? In blood plasma 14 of 18 How is oxygen transported around the body? In red blood cells 15 of 18 What does haemoglobin combine with oxygen to form? oxyhaemoglobin 16 of 18 What do white blood cells do? They form part of the body’s defence system against microorganisms 17 of 18 What are platelets? Small fragments of cell 18 of 18
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