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The heart pulls in the blood and squeezes out again through the blood vessels.
-Chaychan

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The four chambers of the heart are splitted into 2 parts. The upper two are called atrium and the lower two are called ventricles.
-JJ

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Due to bad diets (Fat) and lack of exercise the arteries can be clogged. A clogged arteries keeps oxygen blocked all the parts of you body.
-Chaychan

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When you exercise, your heart beats faster than when you are resting.

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Smoking can hurt your heart and make it unhealthy.
Talia

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Some people are born with heart problems, and some get them when they are older. Arteries that are too thin or valves that do not close properly can keep blood from flowing the correct way. Heart problems can also be had when people eat food that is high in fat, the fat can build up the arteries and make them clog.
-Raichah

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The heart changes spent blood for oxygen rich blood.

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The heart has 4 chambers. There are 2 types of chambers, the atrium and the ventricle. There is a pair on each side of the heart.
-Hanel

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The heart is a organ which pumps blood through the blood vessels of the circulatory system.

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The left atrium collects the blood from the lungs and when its full the valves open. The right atrium collects blood from the rest of the organs except from the lungs and when its full the valves will open like the other atrium. The blood from both of the atriums will go to the ventricle on their side. All the blood in the ventricle gets sent throughout your body.
-JJ

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CAD is a disease that stops your heart from working.

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Our hearts have 4 chambers. There are two towards the upper side and two towards the lower side. The upper ones are called atria and the lower ones are called ventricles.
-Sean L.

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Your heartbeat is made by small flaps that let blood out of the heart, but not in.

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Heart faliure occours when your heart muscle doesn't pump enough blood as it should.

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Some people are born with heart problems, and some develop them as they grow older. Also, arteries that are to thin or valves that don't  close properly can sustain the blood from flowing the right way. In addition, heart problems can be caused by a bad diet or lack of exercise. When people eat food that has a lot of calories, the fat can build up in the atries.
-Esther

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As we get older, the smooth inner walls of the arteries that supply the blood to the heart can become damaged

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When you do sports your heart pumps faster as the muscles need more oxygen and nutrients.
-Chaychan

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Our heart contains 4 chambers, or parts in it. The chambers towards the top are called the atria. The chamber towards the bottom is called the ventricles.
-Raichah

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Our hearts contains four chambers or sections.  There are top chambers and bottom chambers and the top ones are called atria also the bottom ones are called ventricles.
-Esther

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Your atriums collect blood from your organs. Once they are full, your blood gets sent to your body. Your muscles need blood for energy so when you do something tiring, your heart pumps faster.
-Sean L.

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The heart works by contraction (getting smaller). The heartbeat is controlled by the cardiac conduction system.

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the heart beats faster when you are moving and when your relaxing or sleeping it beats slower.
-JJ

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One half of your heart, the right side, pumps blood to your lungs. In the lungs, is filled with oxygen. Then the blood is returned to the other half of your heart, the left side

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Physically Active can help your heart to stay healthy by strengthening your heart
Talia

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The heart is two pumps in one, the left side gets blood from the lungs and pumps it to the rest of the body, but the right side gets blood from the body and pumps in to the lungs.

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Blood takes the same route all the time, as it travels through the heart. First it goes through the right atrium, then down to the left ventricle. Then it goes to the lungs to regain oxygen. It comes back through the left atrium and then goes to the left ventricle. The biggest pump of blood comes when the blood leaves the left ventricle to deliver oxygen to the rest of the body.

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The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.

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arteries to the rest of your body.The right side of your heart receives oxygen poor blood from your veins and brings it to your lungs, where it picks up oxygen and gets rid of carbon dioxide.  The left side of your heart receives oxygen-rich blood from your lungs and brings it to the rest of your body.

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As the blood travels through the heart, it takes the same route. First it goes to the right atrium and goes down to the right ventricle. Then it goes to the lungs to get oxygen. After that, it comes back from the left atrium and then goes to the left ventricle. Finally, our heart does the biggest pump of blood when the blood leaves to the left ventricle to deliver rest of the oxygen to the body.
-Esther

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If someone eats too much fat, their ateries can be clogged therefore, blood will not be able to be pump throughout your body. If the oxygen cannot get through, your heart can't keep it's beat which can make you feel pain. This is called a heart attack.
-Sean L.

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The heart is a muscle inside of your chest. It pumps blood to the rest of your body, and without a heart you wouldn't be alive right now
-Raichah

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as we get older, the inner lining of the arteries and veins can get damaged. A blood clot can also damage the heart.

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You can mange your blood pressure, blood cholesterol, and manage you diabetes.

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The heart is a muscular organ which pumps blood throught the body and carries oxygenated blood from the lungs.

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Nahm
when you go for a check up with a doctor they use a  stethoscope to lisen carefully to your heart, and if it makes a lub-dub noise then it is healthy.

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You can keep your heart healthy by exercising. While you do this, your heart has to pump more blood. This, like with all muscles, strengthens your heart.  Also, don't breathe in CO2.

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Your heart has four chambers inside of it. The top chambers are called atria and the bottom ones are called ventricles.

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Try to eat at least five servings of fruits and vegetables each day

Try not to drink sugary drinks and fruit drinks (like Tipco and Etc.)

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The heart has 4 chambers. The upper ones are called atria and the ones at the bottom are called ventricles. Tristan

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The heart has 4 valves one for each chamber of the heart. Blood valves kees blood moving through the heart in the right direction.

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The heart is a muscular organ in most animals, and it pumps blood through the blood vessels of the circulatory system

(I did not copy this from Myk)

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The blood pumps into the right atrium, then goes into the right ventricle. After that, it goes to the lungs to get oxygen. Then it goes through the left atrium and goes through the left ventricle. Then it pumps out to give blood to the rest of the body.

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The heart is a muscular organ in most animals including humans and it pumps blood through blood vessels in the circulatory system to keep you alive.
-Sean L.

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You should exercise around every day to keep your heart and body healthy and fit.

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The Heart contracts ,as it is a muscle, to pump blood throught the body.

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There are 4 chambers
-Right atrium
-Right ventricle
and same for the left side
so there are 2 types of chambers

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The heart is made of 4 chambers. Two recieve the blood, the atriums, and let it flow to the main pump, the ventricals which pump blood to either the lungs or around the body. The left ventricle and atrium  collect dehydrated blood from the body and pump it to the lungs. The right side of the heart recieves blood from the lungs and pumps it around the body.

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Some people are born with heart problems. They might have arteries that are too narrow or valves that don't close properly, so they can't keep the blood flowing the right way. This can lead to further problems.

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The heart is an organ which pumps blood through your body, keeping you alive. Tristan

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In order to keep your heart healthy, you should eat healthy (Not too much fat), you should exercise (too produce more oxygen),  Your heart is a muscle so it is best to make sure it is strong.
-Sean L.

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Each day, your heart beats around 100,000 times

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Your heart is a muscle inside your chest. It pumps blood for your body.

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The heart is made of 4 chambers. The upper 2 are called atria and the lower 2 are called ventricles.
Natasha.

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The heart pumps out blood to the lungs, which fills it with oxygen, then the blood is moved back to the heart. After that, the heart pumps the blood to the rest of the body.

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You should exercise regularly to keep your body and heart fit. You also shouldn't eat unhealthy food because that can ruin heart.

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The heart pumps out blood to all of your body. The blood brings the fuel around your body so it can work. The heart pumps and blood goes to the lungs so oxygen fills up your lungs allowing you to breathe .

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The heart is made of 4 chambers. Two recieve the blood, the atriums, and let it flow to the main pump, the ventricals which pump blood to either the lungs or around the body. The left ventricle and atrium  collect dehydrated blood from the body and pump it to the lungs. The right side of the heart recieves blood from the lungs and pumps it around the body.

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When you are doing exercise your heart pumps faster, but when you are sleeping or resting or chilling your heart pumps slower.

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tachycardia, when the heart beats too fast
bradycardia, when the heart beats too slowly

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There are 4 chambers in the heart 2 are called atria and the lower 2 chambers are called ventricles.
-Ella.

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An organ that keeps you alive and pumps blood around your body

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Your heart is a bag of muscle in our chest. Also, your heart move blood around your body. Furthermore, blood keeps your body warm and to move.
-Esther

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The heart pumps blood around the body.

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Eating unhealthy food, and heart failure. Some people are born with heart failure.

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Your hear is a bag of muscle inside your chest keeping you alive and pumping blood for you to live.

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Your heart is a muscle in the middle of your chest and a bit to the left. The heart is always pumping which keeps you alive.

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To keep your heart healthy, you need to manage fitness levels, blood pressure and social time.

Fitness levels help your heart stay strong with arobic exersise or any type of exersise that keeps your heart rate at above 120 bpm can keep your heart strong.

Keeping blood pressure at a average reading can ruduce risk of heart desiese considerably. Blood pressure can also decresse  eyesight and other bad dessises.

Studies show that laghing can

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doing exercise every week keeps your heart pumping more blood and makes it healthy.

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Eat healthy food, exercise, don't smoke so your heart keeps pumping blood and it's still healthy

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You should eat healthy food and exercise regularly. Also, don't smoke since it will get clog and eventually the veins will get narrow. Then your blood won't circulate properly.

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Try not to smoke because if you dont smoke its one of the best things to protect your heart.
Natasha

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Your heart is a muscle that is about the size of your fist and your heart always is pumping to keep you alive.
Natasha

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If you are born with heart problems that could damage your heart someway.

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If you exercise your heart will pump quicker and when you're relaxing your heart will pump slower.
-JJ