Function Of Blood Assignment Help

Blood

Total blood volume is about 8% of body weight. It contain cells ERYTHROCYTE(RBC), leucocytes(WBC), and platelets or thrombocytes. Plasma represents 55% of total blood volume. Plasma contains 91% water, 1% inorganic molecules, 8% organic molecules in this 8% &% is plasma proteins 1% non protein nitrogenous substances.

function of blood

1. Respiratory
2. Nutritive
3. Excretory
4. Homeostatic
5. regulation of body temp.
6. chemical for communication and protection

Blood Indices

1. Mean corpuscular volume:- volume of single RBC in fL

PCV per 100 ml blood *10 fL

MCV----------------------------------

RBC count in million/micro L

1. Mean corpuscular haemoglobin(MCH) :- average amount of haemoglobin in a single RBC in picogram
2. Mean corpuscular haemoglobin concentration(MCHC)

Anaemias :- a clinical condition characterized by reduction in the number of RBCs less than 4 million/micro L or the content of haemoglobin less than 12gm/dL. It is classified in following classification

Etiological or Whitby’s classification:-

1. Haemorrhagic
2. Dietary deficiencies
3. Dyshematopoiesis
4. Hemolytic

Morphological or Wintrobe’s classification :-

1. Pernicious anemia or addison’s anemia
2. Folic acid deficiency anaemia
3. Iron deficiency anaemia
4. Congenital spherocytosis
5. Erythroblastosis foetalis
6. Glucose-6-phosphate dehydrogenase deficiency anaemia

Jaundice:- yellow discoouration of the skin, eyes, and other body parts. Clinical jaundice occurs when serum bilirubin exceeds 2 mg/dL. Jaundice can be of

1. PRE Hepatice(hemolytic)
2. HEPATIC(hepatocellular)
3.POST HEPATIC(obstructive) jaundice

Coagulation Of Blood :-

Spontaneous arrest of bleeding by physiological process is called haemostasis. It occurs mainly by a series of complex reactions which can be grouped under.

1. Intrinsic mechanism
2. Extrinsic mechanism

Blood Group :-

there are number of blood group type but important one are
1. ABO type
2.Rhesus type
3. M and N blood group.

Landsteiner’s law states, If an agglutinogen is present in the RBCs of an individual, the corresponding agglutinin must be absent from the plasma and vice-versa

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