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If you would like to make a donation to the British Heart Foundation, please ring our credit card hotline on 0870 606 3399 or contact us through our website [at](at bhf.org.uk/donate or)[ bhf.org.uk/donate](at bhf.org.uk/donate or)[ or](at bhf.org.uk/donate or) send it to us at the address on the back cover.  \nBritish Heart Foundation website  \nYou may find other useful information on our website at: [bhf.org.uk](bhf.org.uk)  \nAbout this booklet ................................................................................... 4  \nThe heart and circulatory system .................................................. 5  \nTechnical terms ........................................................................................... 9  \nFor more information .......................................................................... 51  \nHave your say ............................................................................................ 54  \nThis booklet is for people with heart disease, and for their family and friends. It explains:  \n• how the heart works, and  \n• the medical terms you might hear while talking to doctors and nurses.  \nThis booklet does not replace the advice that your doctors or nurses may give you, but it should help you to understand what they tell you.  \n4 l British Heart Foundation  \nYour heart is a pump. It keeps blood moving around your body. The blood delivers oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and other waste products.  \nThe heart has four chambers – two on the left side and two on the right. The two upper chambers are called the atria, and the two lower chambers are called the ventricles. The two sides of the heart are divided by a muscular wall called the septum.  \nEach side of the heart has a ‘one-way valve system’, which means that the blood travels only in one direction through the two chambers on each side.  \nThe illustration on the next page shows the direction that the blood flows in through your heart, and the names of all the different parts of the heart.  \nThe heart – technical terms explained l 5  \nYour heart and how it works  \nThe right side of the heart receives blood from the veins in the body and pumpsit through the pulmonary artery to the lungs. There it picks up fresh oxygen and releases carbon dioxide and then passes through to the left side of the heart.  \nThe left side of the heart receives oxygen-rich blood from the arteries in the lungs, and pumps it through the aorta to the body.  \nThe illustration below shows the direction the blood flows in. We explain this in more detail on the next page.  \nRight side of the heart Left side  \nTo the head and arms  \nFrom the head and arms  \nTo the right lung  \nAorta  \nPulmonary artery  \nTo the left lung  \nFrom the right lung  \n Pulmonary vein  \nRight atrium    \nFrom the left lung  \nLeft atrium  \nPulmonary   \nvalve  \nTricuspid valve  \nRight ventricle  \nFrom the lower part of the body and legs  \nAortic valve Mitral valve  \nLeft ventricle  \nTo the lower part of the body and legs  \nHeart muscle  \n6 l British Heart Foundation (myocardium)  \nWith each contraction, or heartbeat, the heart pumps blood forward from the left side of the heart through the aorta and into the arteries. The arteries divide off into smaller and smaller branches to supply a microscopic network of capillaries, taking the blood to every part of your body.  \nThe blood then travels back to the heart. First it goes from the capillaries into the veins. The branches of the veins join to form larger veins, which deliver the blood back to the right side of your heart.  \nAs the h","cbCaigqNB90zJxqx","https://ap.wps.com/l/cbCaigqNB90zJxqx","pdf",443986,56,"English","# About this booklet\n# The heart and circulatory system\n# Technical terms\n# For more information\n# Have your say","[{\"question\":\"Who is this booklet intended for?\",\"answer\":\"It is for people with heart disease and for their family and friends.\"},{\"question\":\"What does the booklet explain about the heart?\",\"answer\":\"It explains how the heart works and the medical terms readers may hear when speaking with doctors and nurses.\"},{\"question\":\"Does the booklet replace advice from healthcare professionals?\",\"answer\":\"No. It does not replace the advice your doctors or nurses may give, but it helps you understand what they tell you.\"}]","The heart - technical terms explained - Heart Information Series Number 18 - Beating Heart Disease Together | PDF",1790581247,141]