Blood5

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Blood5

  1. 1. BLOOD CIRCULATION
  2. 2. BLOOD • Blood is a very important liquid. • It carries oxygen and the substances from digestion to different parts of our body. • The journey of the blood around our body is called circulation.
  3. 3. • The circulatory system is responsible for blood circulation. • It is made up f the heart and the blood vesseles.
  4. 4. THE HEART • The heart is an organ. • It pumps the blood around our body. • Our heart is between the two lungs.
  5. 5. BLOOD VESSELS • Blood circulates inside blood vessels. • Three types of blood vessels: arteries, veins and capillaries. – ARTERIES: carry blood with oxygen. – VEINS: collect blood with carbon dioxide. – CAPILLARIES: connect veins and arteries .
  6. 6. BREATHING -The respiratory system is made up of the following organs: nostril, trachea, two bronchial tubes and two lungs. - Our ribs protect our lungs.
  7. 7. • Air enters our body through the nose and mouth. • It passes through the nostrils. • It goes down through the trachea and the bronchial tubes, and into the lungs.
  8. 8. • Oxygen from the air passes through the walls of our lungs into our blood.
  9. 9. - We make two movements: inhalation and exhalation. - When we inhale, our lungs fill with air. - When we exhale, air leaves our lungs.

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