Blood composition

Its about composition and its function.

1. BLOOD : Composition and Functions BY- BIJI SARO VARGHESE Roll no:3654 B.Sc.III Sem-IV

2. BLOOD….??? Blood is a fluid connective tissue derived from mesoderm. It is bright red , slightly alkaline (pH7.4) and viscous. An average size adult has about 5 l of blood.

3. COMPOSITION OF BLOOD

4. CELLULAR COMPONENTS

5. ERYTHROCYTES Circular, biconcave, enucleated 4-5 million per cubic mm of blood in adult Average life span of 120 days. Formed in bone marrow &destroyed in liver and spleen. The RBCs contain respiratory pigment called hemoglobin. FUNCTIONS RBCs transport oxygen from lungs to tissue and carbon dioxide from tissue to lungs.

6. LEUCOCYTES Colourless, nucleated & phagocytic cells 5000-9000 per cubic mm of blood. Average life span of 3-4 days. Formed in bone marrow, spleen, lymph nodes, thymus & payer's patches &destroyed by phagocytosis in blood, liver &lymph nodes .

7. TYPES

8. GRANULOCYTES

9. AGRANULOCYTES

10. THROMBOCYTES Anucleated , round to polygonal& biconvex 2.5-4.5 lakhs per cubic mm of blood. Average life span of 5-10 days. FUNCTIONS Aggregate at site of injury and form platelet plug. Release thromboplastin which helps in clotting of blood.

11. NON-CELLULAR COMPONENT PLASMA Straw coloured, slightly alkaline &viscous fluid. 93% water along with other solute 7% protein. Plasma proteins are albumin, globulin, fibrinogen & prothrombin . All cellular components are suspended in plasma. FUNCTIONS It maintains the viscosity of blood Transport dissolved oxygen

12. FUNCTIONS OF BLOOD

13. THANK YOU!