differentiate between white blood cells, red blood cells and platelets.
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Feature
Red Blood Cells
White Blood Cells
Platelets
Name
Erythrocytes
Leucocytes
Thrombocytes
Color
Red
Colorless
Colorless
Formation
Liver and spleen (embryonic life), red bone marrow of sternum, ribs, vertebrae (adult life)
Red bone marrow and lymphatic system
Red bone marrow
Size
6-8 μm
Larger than Red Blood Cells, 12 to 15 µm
Smaller than Red Blood Cells
Shape
Biconcave
Different
Plate like
Number per mm3 of Blood
5-5.5 million (male), 4-4.5 million (female)
7000-8000
250,000
Structure
Elastic cell membrane, no nucleus
Have Nucleus
No nucleus, membrane bounded, Cytoplasmic fragments of cells
Life Span
4 months (120 days)
Variable
The average life span of circulating platelets is 8 to 9 days. Transfused platelets have 3-4 days of life span.
Function
Transport of Gases
Immunity
Blood Clotting
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Rbc responsible for transport the respiratory gases (O2 &CO2) Wbc provide defense mechanism for fighting foreign micro organism..............
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