What Is Blood ? Constituent Of Blood. Function Of Blood. Features Of Blood.
Blood Blood is a Vital Fluid Of Our Body. It is a Modified Fluid Connective Tissue Which is Made Of Formed element Cell (45%)And Plasma(55%). Properties Of Blood: 1. Constant Volume:- Blood Volume Doesn't Depend On Blood Constituent. 2. Colour:- It's Colour is Red Always due to Presence Of Co-ordinate Covalent Bond. 3. pH :- 7.4 ( in veins ) to 7.6 ( in Arteries) 4. Viscosity:- It's Viscosity is more than 5 times Of Purified Water. 5. Specific Gravity:- 1.050 to 1.060 6. It Differentiate between Blood Groups. ✓Formed Element Cells Are (45%): 1. Erythrocytes ( RBC )- 40% •It Has Highest Density due to Iron. •BiConcave Shape • Life Span:- 120 Days 2. Leukocytes ( WBC )- 0.5% • It is Responsible For Defence And Immunity Of the Body. • It is Of 2 Types:- 1. Granulocytes:- Neutrophils, eosinophils, basophils. 2. Agranulocytes:- Monocytes, Lymphocytes. 3. Thrombocytes ( Platelets )- 4.5% • size :- 2 to 4 micrometre • Life Span :- 8 to 11 Days...