What is blood? Types of blood: Plasma Red blood cells White blood cells platelets

2. PRESENTATION OF SCIENCE
BLOOD

3. CONTENTS:
•WHAT IS BLOOD?
•TYPES OF BLOOD:
•PLASMA
•RED BLOOD CELLS
•WHITE BLOOD CELLS
•PLATELETS

4. WHAT IS BLOOD?
•IT IS A RED LIQUID.
•BY LOOKING IT WITH MICROSCOPE IT WILL
NOT BE RED AT ALL.
•ITS COLOR WILL BE PALE YELLOW .

6. PLASMA
•IT IS LIQUID PART OF BLOOD.
•IT IS MOSTLY WATER.
•IT CONTAINS MANY SUBSTANCES.

8. RED BLOOD CELLS
•THESE ARE SMALL CELLS.
•THEY ARE RED BECAUSE THEY CONTAIN RED PIGMENT CALLED
HEMOGLOBIN.
•WHEN BLOOD FLOWS TO LUNGS OXYGEN DIFFUSES INTO IT.
•THE HEMOGLOBIN INSIDE IT BECOMES OXYHEMOGLOBIN.
•IT IS BRIGHT RED.

9. •THE BLOOD FLOWS THROUGH BODY TISSUES.
•THE OXYGEN SEPARATES FROM HEMOGLOBIN.
•IT BECOMES HEMOGLOBIN AGAIN.
•IT IS BLUEISH RED.

11. WHITE BLOOD CELLS
•WHITE BLOOD CELLS ARE LARGER THAN RED BLOOD CELLS.
•THEY HAVE NUCLEUS.
•THEY FIGHT AGAINST BACTERIA AND VIRUSES.
•SOME OF THEM HAVE FINGERS THAT CAPTURE BACTERIA.
•THEY PRODUCE ENZYMES THAT KILL AND DIGEST BACTERIA.
•OTHER WHITE BLOOD CELLS PRODUCE SPECIAL MOLECULES THAT ATTACH
TO BACTERIA AND KILL THEM.
•THESE MOLECULES ARE CALLED ANTIBODIES.

13. PLATELETS
•THESE ARE FRAGMENTS OF CELLS.
•IF A BLOOD VESSEL GET DAMAGE THE PLATELETS HELP THE BLOOD TO CLOT
AND SEAL THE WOUND.