Thursday, March 10, 2011

[Science Form 3] Functions of the heart

  • Blood flows in a circulatory manner.

  • The heart pumps blood out through contraction and squeezing action.

    • Blood is pumped out of the lungs to the heart through the pulmonary veins (oxygenated blood).

    • Blood is pumped out to other body parts through the aorta.

    • Arteries --> capillaries [ (dissolve oxygen + digested food + minerals --> cell)
      (waste products and carbon dioxide --> blood) ] --> veins.

    • Veins carry deoxygenated blood back to the heart (right side).

    • The deoxygenated blood is carried to the lungs to be oxygenated.


  1. can I ask one question....what is the function of valve?

    1. to ensure 1 way movement of the blood


Nota Terkini