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