Hello friends what’s going on? I hope you are steel happy. Today we are discuss about White Blood Cells in human body.
- They are colourless cells in nucleus.
- They are larger in size than RBCs. And also number is less as compared to RBCs.
1. Granules :
WBC have granules in the cytoplasm.
They have nucleus which contains two or more lobes.
It is divided into three types :
1). Neutrophils :
They contain granules cytoplasm which obtain with natural dyes.
- They nucleus contains 2 – 5 lobes.
- Neutrophils occurs to the extent of 60 – 70% of total WBCs.
2). Basophils (Mast cells) :
- They contains coarse granules as in eosinophils. But these granules stain blue with basic dyes.
The nucleus is kidney shaped or lobulated.
- It contains Hepanin, Histamine, 85 – Hydrorytramine. Normal Range – 0.5 – 1% and total WBCs.
2. Agranulocytes :
This type of WBCs do not have granules. But they have single nucleus which is not lobed.
It is of two types :
1). Lymphocytes :
a). Small :
- Occurs to the extent of 26% and total WBCs.
- A nucleus occupying almost the whole of the cells, so the cytoplasm is less.
b). Large lymphocytes :
They are larger in size containing more cytoplasm.
2). Monocytes :
They are larger of WBCs. The occur to the extent of 2 – 4% of WBCs. They contain an eccentric nucleus which notched in the inner side.
- Protect against infections.
- This is done by neutrophils and monocytes which energy bacteria. This is called as phagocytosis.
- To acid in the repair of injured tissue.
- To produce immune substances which defends against disease.
- Basophils secretes an anticoagulant substance called Heparin.
Red blood Cells