Nutrition part 2

Nutrition part 2

1. THE CIRCULATORY SYSTEM

   • https://www.youtube.com/watch?v=nsSg4Eq3LEo
   • BLOOD
     • BLOOD VESSELS
       • ARTERIES
         • VEINS
           • they carry blood from the body to the heart
         • CAPILLARIES
           • they are tiny blood vessels which connect the arteries and the veins.
         • they carry blood from the heart to the rest of the body
     • White blood cells
       • Plasma
         • Platelets
           • Red blood cells
             • they give blood its colour. They carry oxygen and carbon dioxide.
           • they join together and help stop the bleeding when the body is losing blood because of a cut in the skin.
         • it is yellow liquid. 90% is water. It carries nutrients and waste products.
       • White blood cells
         • they fight infection.
           • Video:https://youtu.be/tg_ObDJEaGo
   • Heart
     • two atria (at the top).
       • two ventricles (at the bottom).
     • https://www.youtube.com/watch?v=WN6sAN2hcFM
       • Vídeo explicativo del corazón humano para niños en Español.

2. ·

   • • • THE EXCRETORY SYSTEM
         • The excretory system lo seguire editando,otro día.