3. 01
D E F I N AT I O N
THE CIRCULATORY SYSTEM IS RESPONSIBLE FOR THE
TRANSPORTATION OF NUTRIENTS, WATER, OXYGEN
AND METABOLIC WASTES THROUGHOUT THE BODY. IT
ALSO REGULATES THE BODY TEMPARATURE.
5. HEART
H E A R T IS LIKE A DOUBLE
STOREYED HOUSE, WITH FOUR
CHAMBERS. THE TOP TWO
CHAMBERS ARE CALLED AS THE
AURICLES. THE BOTTOM TWO
CHAMBERS ARE CALLED AS THE
VENTRICLES.IT PUMPS BLOOD,
WHICH IS CIRCULATED THROUGH
THE WHOLE BODY BY THE
BLOOD VESSELS.
6. BLOOD VESSELS
BLOOD VESSELS CIRCULATES THE
BLOOD THROUGHOUT THE BODY.
IT CONSISTS OF THREE PARTS -
ARTERIES, VEINS, CAPILLARIES.
ARTERIES CARRY OXYGENTED
BLOO.VEINS CARRY THE
DEOXYGENTED BLOOD .
CAPILLARIES.
7. BLOOD CELLS
THE BLOOD CELLS ARE OF THREE
TYPES - RBC’S { RED BLOOD
CELLS }, WBC’S { WHITE BLOOD
CELLS }, PLATELETS. THE FLUID
PART OF BLOOD IS PLASMA.
RBC’S ARE THE CARRIER’S OF
OXYGEN. WBC’S PROTECT THE
BODY FROM VIRUS AND
BACTERIA. PLATELETS HELP IN
CLOOTING
