Froggy Jumps cardiovascularVersion en ligne cardiovascular system par Victor Lutyansky 1 a device for controlling the flow of a liquid or gas, letting it move in one direction only a apex b septum c valve 2 a thin part that separates two hollow areas, for example the part of the nose between the nostrils a septum b atrium c coat 3 a layer of paint or some other substance that covers a surface a chamber b coat c ventricle 4 a space in the body, in a plant or in a machine that is separated from the rest a interspace b lung c chamber 5 either of the two organs in the chest that you use for breathing a apex b lung c liver 6 a large organ in the body that cleans the blood and produces bile a ventricle b heart c liver 7 either of the two upper spaces in the heart that are used in the first stage of sending the blood around the body a lung b atrium c valve 8 either of the two lower spaces in the heart that pump blood to the lungs or around the body a ventricle b septum c interspace 9 the membrane (= thin layer) that surrounds the heart a pleura b endocardium c pericardium 10 any of the tubes that carry blood from the heart to other parts of the body a artery b vein c layer