{"content":[{"text":"LET’S TALK ABOUT THE heart","bbox":{"left":0.27925,"top":0.011205,"width":0.5026959999999999,"height":0.047418}},{"text":"Did you know?","bbox":{"left":0.067434,"top":0.138769,"width":0.11399500000000001,"height":0.020322000000000007}},{"text":"Did you know that an adult heart is about the size of a softball, but an infant’s heart is only about the \n size of a golf ball? The heart is just one of our lifesaving organs needed for our bodies to function; \n can you believe it beats an average of 100,000 times each day?","bbox":{"left":0.062368,"top":0.173444,"width":0.863646,"height":0.054318000000000005}},{"text":"materials:","bbox":{"left":0.067801,"top":0.26321,"width":0.09234,"height":0.021677000000000002}},{"text":"1","bbox":{"left":0.068361,"top":0.301498,"width":0.006209000000000006,"height":0.01810600000000001}},{"text":"An empty paper towel tube. \n An area to perform exercise activities. \n A timer or a stopwatch.","bbox":{"left":0.089265,"top":0.298663,"width":0.325489,"height":0.07807600000000003}},{"text":"2 \n 3","bbox":{"left":0.06725,"top":0.330601,"width":0.01024499999999999,"height":0.044801000000000035}},{"text":"BACKGROUND INFORMATION:","bbox":{"left":0.06738,"top":0.414003,"width":0.220758,"height":0.021677000000000002}},{"text":"The heart is not only an organ; it is also a strong muscle that pumps blood through the body. The \n heart is located between the lungs but is slightly closer to the left lung than the right lung. The \n heart is protected by the sternum, which is also known as the breastbone. There are four areas \n – or chambers – in the heart; the upper chambers are known as the atriums, and the lower \n chambers are the ventricles.","bbox":{"left":0.059781,"top":0.449806,"width":0.834627,"height":0.08713599999999994}},{"text":"As you might recall from another recent Lifesavers video, the main job of the lungs is to take oxygen \n in from outside the body, which starts the breathing process. The breathing process has two phases: \n inhalation, or the breathing in of air, and exhalation, when you breathe air out. During inhalation, \n oxygen enters the lungs and the left side of the heart, and the heart pumps blood and oxygen to the \n entire body. This keeps us healthy. However, once the body uses the oxygen, carbon dioxide develops, \n which is harmful if it stays in our body. To get rid of the carbon dioxide, it ﬂows back to the right side \n of the heart, which pushes it into the lungs and is exhaled. Then, the entire process starts over.","bbox":{"left":0.059781,"top":0.548276,"width":0.887984,"height":0.119954}},{"text":"There are certain infections, diseases and even birth defects that can cause the heart to no longer \n function properly. One primary reason a person could need a heart transplant is because the left \n ventricle becomes enlarged and weakened, which makes it unable to pump blood correctly. We \n cannot always determine why the heart stops functioning properly, but one thing we can do to \n help protect it is to exercise, not smoke and try to eat fewer unhealthy fats.","bbox":{"left":0.059781,"top":0.679564,"width":0.846275,"height":0.08713599999999999}},{"text":"Many people love food with unhealthy fats, such as pizza, cheeseburgers, desserts and donuts. It is \n perfectly ﬁne to eat these foods in moderation because our bodies need certain types of fat to give \n us energy and to help our brains function. However, it is also highly important to exercise and eat a \n variety of foods that are lower in fat, such as fruits and vegetables, to keep the heart healthy.","bbox":{"left":0.059781,"top":0.778033,"width":0.857059,"height":0.07072699999999998}}],"images_bbox":[],"images_bbox_not_text_overlap":[]}