circulatory system

circulatory system 

The circulatory system is the most important system because is the only one that works wiht the all systems.

The circulatory system is in charge of transporting the oxygen and the nutrients to the cells and to eliminate its wastes.

The circulatory system consists of heart,blood and blood vessels.

                                         Heart:
     The heart is the principal organ of the            system.Inside the heart there are four              cavities: two atria and two ventricle.              The heart pumped the blood 
     to pass it to the whole 
     body. 
      

Blood:

   In the blood they are three types blood cells:


   Red blood cells: 

   They transport  oxygen and carbon 

   dioxide.

    
     White blood cells: 
    They protect the body by capturing
    bacteria and viruses.




  Platelets:
   Close the wounds to stop 
   bleeding. 



 Blood vessels:
 Enter the body there are three  types of blood vessels.

 Capillaries:

It is the smallest vein in the blood vessels.

Arteries:
They carry oxygenated 
blood.

Veins: 
Carries waste from the blood.