Blood contains red blood cells, white blood cells, and platelets suspended in plasma. Red blood cells transport oxygen and carbon dioxide throughout the body. White blood cells help fight infection in two categories: granulocytes including neutrophils, eosinophils, and basophils, and agranulocytes such as monocytes and lymphocytes. Platelets help prevent bleeding by forming clots at sites of injury. Overall, blood defends the body as a connective tissue through these cellular components and plasma proteins.

2. Topic : blood cells

3. introduction
Blood is the most used body fluids by
most of the higher organisms
including humans for the transport
of certain substances.
blood is a special connective
tissue consisting of a fluid matrix,
plasma, and formed elements.

4. Red blood cells (rbc)
Red blood cell are other
wise known as
erythrocytes . They are
the most abundant cells
in the blood. A healthy
man has on an average
,5millions to 5.5 millions
of RBC’s mm3 of blood.
RBC formed in the red
bone marrow in the
adults. These molecules

5. White blood cells
White blood cells are otherwise
known as leucocytes .
Leucocytes are generally short
lived. We have two main
categories of WBCs :
1) Granulocytes
- Neutrophils
- Eosinophils
- Basophils
2) Agranulocytes
- Monocytes
- Lymphocytes

6. Different types of wbc :
• Neutrophils are present in the pus of the
wounds
• Eosinophils are attack parasites.
• Basophils produces heparin and prevents
blood clotting.
• Monocytes are the precursors of
macrophages , phagocytes

7. Platelets
Platelets are the
numerous cell of the
blood. The normal
platelet count is
1,50,000 – 3,50,000
per micro litre of
blood but since
platelets are so small.
The principal function
of platelets is to
prevent bleeding.

8. conclusion
Blood is a type of connective
tissue, composed of scattered
cells within a noncellular matrix.
Composed of basic components :
RBC, WBC , Platellets and plasma
proteins. The main of function of
blood is defence mechanism