3. Plasma
Plasma Contains:
90% of water
Salts… keep the blood alkaline chiefly chlorides ,phosphates,carbonates of Na , K and
Ca.
Proteins (albumin, globulin, and fibrinogen)
Antibodies mainly globulins
Hormones
Nutrients like fatty acids ,glucose and amino acids
Oxygen in soluble form
Waste Products like Urea and Carbon Dioxide
Blood Clotting substances like fibrinogen, prothrombin, heparin
Enzymes.
4. Blood Cells
The blood cells are of three types :
Red Blood cells
White Blood cells
Platelets
5. Red Blood Cells
These are also known as “Erythrocytes”.
The life span of RBS is 120 days.
They are formed in bone marrow. Production of RBC requires VitB12.
They are of Biconcave disc shaped.
No nucleus present in thesecells.
Volume: 5-5.5 ml/mm3.
The function of RBC is to carry oxygen and collect carbon dioxide through the use of
hemoglobin(iron) .
Hemoglobin level in
Male: 14-18g/100cc
Female: 12-16g/100cc
6. White BloodCells
• These are also known as “Leucocytes”
• The life span of WBC is 3-4days.
• Volume: 7000-10,000ml/mm3
• Main function of WBC is to fight bacterial infections by
engulfing and killing the bacteria and to digest the dead
tissues.
• They are of irregular shape
• Protoplasm and nucleus is present in these cells
7. Types of WBC
These are of two types
Granular Leucocytes(They have granules in their
cytoplasm.)
Non Granular Leucocytes(They do not have granules
in their cytoplasm)
9. Platelets
These are also known as “Thrombocytes”
The life span of platelets are 3-7 days.
Number : 2,50,000 per cubic mm of blood
Formed in special cells of bone marrow
They are of irregular shape
Nucleus is present in these cells.
The function of platelets is to help in formation o
fblood clots.
Breaks down, when bleeding occurs due to injury and
release an enzyme thromboplastin,which initiates blood
clotting.