Introduction and composition of blood and their function
INTRODUCTION OF BLOOD
- Blood is a fluid connective tissue which is responsible for the connection between two or more organs and integrate the body .
- Blood content in our body is upto 6 liters .
- The ph of blood is 7.4 i.e. it is slightly alkaline .
- The blood has a specific gravity of 1.055.
- The density of blood is slightly greater as compared to water.
FUNCTIONS OF BLOOD
- Oxygen transportation by Red Blood Cells.
- Nutrition transport : It supplies nutrients to different organs from the digestive system.
- Hormones (secreted by endocrine glands) and other substances (secreted by other organs).
- Redistribution of H20 : responsible for maintenance of water balance in the body.
(transport water from one tissue to other )
- Blood helps in the protection from different disease because it contain immunity and resistance.
- Reduce blood loss through cuts by clotting substance. Platelets
- Blood helps in removal of waste products .
COMPOSITION OF BLOOD
- Plasma contributes the major part in composition of blood.
- Besides plasma the other composition like Red Blood Cells , White Blood Cells , and Platelets are also present in them.
- The plasma of the blood also contains Antibodies , hormones , protein , other organic and inorganic substances in them.
- Plasma of blood contains 91% of H2O and some important tissue .
- Plasma proteins are important proteins which are also called blood protein.
- Example : 1. Albumin
1. ALBUMIN :-
- Albumin are found in highest concentration in plasma.
- They are referred to as cheap blood protein that are produced in Liver.
- Albumin maintains the Osmotic Pressure and viscosity of blood . Osmotic pressure is necessory to prevent the loss of various nutrients , which maintains extracellular fluid.
- Albumin transport various substances .e.g iron ,hormone, urine etc.
- Albumin binds with the particular substance and transport from one organ to other.
- Globulin are produced by Lymphoid tissue .
- There main function is to protect body from infection and microorganisms .(alpha globulin)
- These are three types of globulin.
1. alpha globulin
2. beta globulin
3. gama globulin
- Fibrinogen are generally present in inactive form.
- Its main function is blood clotting .
- During bleeding fibrinogen gets activated and prevent clotting.
FUNCTION OF PLASMA PROTEIN
- Transport of substance albumin .
- Maintenance of osmotic pressure and viscosity of blood .
- Blood clotting Fibrinogen .
- Resistance from impurities and microbes.
- Centrifugation is a technique which involves the application of centrifugal force to separate particles from a solution according to their size, shape, density etc .
- If we rotate two substances at a very high speed then substances having higher density will get collected into lower part .
Blood plasma is a yellowish coloured liquid component of blood that normally holds the blood cells in whole blood in suspension; this makes plasma the extracellular matrix of blood cells. It makes up about 55% of the body’s total blood volume.
Blood Serum does not contain white or red blood cells or a clotting factor. It is the blood plasma without the fibrinogens it includes all proteins not used in bloodclotting (coagulation) and all the electrolytes, antibodies, antigens, hormones, and any extra substances (such as drugs and microorganisms)
DIFFERENT BETWEEN PLASMA AND SERUM