Blood - Compositions, Physical Characteristics and Functions

heres a presentation about blood and its characteristics. hope this is helpful!

1. Blood Compositions Physical Characteristics Functions

2. INTRODUCTION Blood  is a fluid connective tissue that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

3. COMPOSITION OF BLOOD

4. BLOOD PLASMA Blood plasma  is a yellowish colored liquid component of blood H olds the  blood cells  in  whole blood  in  suspension  It makes up about 55% of the body's total blood volume .  It is mostly water (up to 95% by volume ) Contains dissolved  proteins  (6–8%) ,   glucose ,  clotting factors ,  electrolytes ,   hormones ,  carbon dioxide   and   oxygen . Blood serum  is blood fluid without clotting factors.

5. Blood protein Normal level % Function Albumins 3.5-5.0 g/dl 58% create and maintain  oncotic pressure ; transport insoluble molecules Globulins 2.0-2.5 g/dl 38% participate in  immune system Fibrinogen 0.2-0.45 g/dl 4% Blood  coagulation Regulatory proteins <1% Regulation of gene expression Clotting factors <1% Conversion of fibrinogen into fibrin PLASMA PROTEIN Examples of specific blood proteins : Transferrin C-reactive protein(CRP) Hemopexin Transthyretin Prothrombin Gamma globulins Ceruloplasmin Haptoglobin

6. BLOOD CELLS Red Blood Cells White Blood Cells Platelets

7. RED BLOOD CELLS (RBC) Red blood cells  ( RBCs ), also called  erythrocytes RBC Count= 4.5-5.4 million per cc Formed by the process of erythropoesis Life Span=120 days The   cytoplasm  of erythrocytes is rich in  hemoglobin , an  iron -containing  biomolecule  that can bind oxygen and is responsible for the red color of the cells. In humans, mature red blood cells are flexible and oval biconcave disks. They lack a  cell nucleus  and most  organelles .

8. WHITE BLOOD CELL(WBC) White blood cells  ( WBCs ), also called  leucocytes . WBC Count=4,000-11,000 per cc Formed by process of leucopoesis Life span varies with types The   cells  of the  immune system . All white blood cells have  nuclei , which distinguishes them from the other  blood cells .

9. PLATELETS Platelets , also called  thrombocytes . Platelets count=1.5-4.5 lakhs per cc Formed by the process thrombopoesis Life span=7days R eact to bleeding from blood vessel injury by clumping, thereby initiating a  blood clot .

10. Functions of B lood 1. Transport 2. Defensive 3. Osmotic 4. Respiratory 5 . Thermoregulatory 6 . Storage 7 . Blood buffer

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