Page 36 - SK Year 5 Science DLP
P. 36

HUMAN BLOOD CIRCULATORY SYSTEM


                                                    Donating blood is
                              Are you ill, dad?     a noble act to help
                                                    those who are in need.
                                                    Observe this blood bag.









                                 Oh, I’m not! I’m
                                 just donating blood.

           The blood circulatory system plays an important role in our body.

           This system transports oxygen, nutrients, water, and waste products
           such as carbon dioxide.
               The main parts involved in the human blood circulatory system are
           the heart, blood vessels, blood, and the lungs.





                            Let’s look at the function of
                            each main part involved in the
                            blood circulatory system.
                    HAWA




          The heart is an organ that pumps blood to the lungs                               left side
          and the whole body. Every time the heart beats, blood
          is pumped in and out of the heart. The heart has two
          sides. The left side of the heart pumps blood that is rich        right side
          in oxygen to the whole body. Meanwhile, the right side
          of the heart pumps blood that is rich in carbon dioxide to
          the lungs.                                                               cross section
                                                                                   of the heart






                                       TEACHER'S    Blood rich in oxygen is shown in red. Blood rich in
                                       NOTE         carbon dioxide is shown in blue.
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