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1. BLOOD
WHITE BLOOD CELL
Submitted by
G.K.Palvannan
MPT sports 1st year

2.  Introduction
 White Blood Cell
 Features of WBC
 Classification
 Functions

3.  WHITE BLOOD CELL
also known as leukocytes
colourless and nucleated formed elements of
blood
important role in defense mechanism

4. FEATURES OF WHITE BLOOD CELL
1.Color - colourless
2.Number – 4000 to 11000/ cu mm
3.Size – larger with maximum diameter of 18meu
4.Shape – Irregular
5.Nucleus – present
6.Granules – present in some types
7.Life span – half day to 15 days
8.Function – Defense mechanism

5.  CLASSIFICATION OF WBC
1. Granulocytes
2. Agranulocytes
1. Granulocytes
Presence of granules in the cytoplasm
Neutrophils, Eosinophils, Basophils
2. Agranulocytes
Absence of granules in the cytoplasm
Monocytes, Lymphocytes.

6.  FUNCTIONS OF WBC
1.Neutrophils
- Polymorphonuclear leukocytes
- Because the nucleus is multilobed
Function
- Along with monocytes , the neutrophils provide the first line of defense
against the invading microorganism.
- it is moved by diapedesis towards the site of infection by means of
chemotaxis.
- it occurs due to attraction by some chemical substance called chemo
attractants.

7. - which are released from infected area.
- it engulf the bacteria and then destroy them by means of phagocytosis.
 FUNCTION OF EOSINOPHILS
- During parasitic infections, productions of number of eosinophils which
moves towards the tissue affected by parasites.
- Eosinophils counts increases during allergic conditions like asthma.

8.  FUNCTIONS OF BASOPHILS
- Helps for healing process.
- plays an important role in allergy or acute hypersentivity.
- this is because of the presence of receptors for IgE in basophil membrane.
 FUNCTIONS OF MONOCYTES
- Like neutrophils, monocytes are motile in nature and the first line defense
mechanism along with neutrophils.

9.  FUNCTIONS OF LYMPHOCYTES
- it is responsible in development of immunity.
- 2 types of lymphocytes
1. T lymphocytes which are concerned with cellular immunity.
2. B lymphocytes which are concerned with humoral immunity.