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Heart presentation

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  • 1. • ENGLISH V: LISTENING & SPEAKING • SARA SOFIA BURBANO SAPUYES
  • 2.  The heart is one of the most important organs in the human being because it is the organ which pumps blood to the lungs and to the rest of the body.
  • 3.  The right side takes in blood from the body and pumps it to the lungs. The left side takes blood filled with oxygen from the lungs and pumps it to the rest of the body.
  • 4.  The heart is made of a special kind of muscle called “cardiac muscle” which never gets tired.  A child’s heart beats about 80 times a minute, a bit faster that an adult’s heart (70 times a minute). When you run or do something exciting your heart beat faster because your muscles need more blood.
  • 5.  The heart is about the size of a clenched fist located nearly in the middle of your chest.
  • 6.  WHY IS BLOOD RED? It is red because each drop of blood contains a substance called hemoglobin that give blood red color.  HOW MUCH BLOOD DO YOU HAVE? A man has 5-6 liters of blood and a woman has about 4-5 liter of blood. Children haves less.
  • 7.  WHAT ARE BLOOD GROUPS? There are 4 main groups of blood: A-B-AB and O. Only some groups can be mixed with others.  WHAT IS A BLOOD TRANSFUSION? It is a very common mechanism used in hospitals and other places to replace lost blood.
  • 8.  Other components of blood are plasma and white blood cells. Over half the blood is a yellowish liquid called plasma. It is mainly water with molecules of digested food. o White blood cells are cells which destroy germs and other intruders.