Question

Name the components of the formed elements in the blood and mention one major function of each of them .


more than 500 words needed

Answer 1

(1) Erythrocytes:
They are the most abundant cells and contain the red pigment called haemoglobin. They carry oxygen to all parts of the body. Red blood cells are produced continuously in some parts of the body such as the marrow of long bones, ribs, etc. There are about 4 – 6 million RBCs per cubic millimetre of blood.
(2) Leukocytes
Leucocytes are colourless cells. These cells do not contain haemoglobin. They are the largest cells of the body and are divided into two main categories.
(a) Granulocytes
These leucocytes have granules in their cytoplasm and include neutrophils, eosinophils, and basophiles. Neutrophils are phagocytic cells that protect the body against various infecting agents. Eosinophils are associated with allergic reactions, while basophiles are involved in inflammatory responses.
(b) Agranulocytes
Lymphocytes and monocytes are agranulocytes. Lymphocytes generate immune responses against infecting agents, while monocytes are phagocytic in nature.
(3) Platelets
Platelets are small irregular bodies present in blood. They contain essential chemicals that help in clotting. The main function of platelets is to promote clotting

Answer 2

components of the blood : the blood of humans is called vascular tissue it is a circulating fluid connective tissue having plasma and blood cells this Complex connective tissue has two main parts as:

1)plasma : it is the fluid part of blood or extracellular fluid it constitutes about 55% of blood volume plasma is yellow coloured viscous fluid it is alkaline in nature it contains 90-92 percent water about 7% plasma protein ( serum albumin, serum globulin and fibrinogen antigen ) 0.1 % of glucose 0.9% inorganic constituents and rest are in traces

the proteins function as enzymes albumin gives osmotic pressure in plasma dissolved minerals are Ca, PO,Cl, HCO3,Mg and Na as well as k extra these maintain pH of blood

2) components of formed elements they are of three kinds RBC WBC and platelets they are about 45% of blood volume

=>A) erythrocytes :( RBC) these are enucleated and biconcave disc shaped their number is about 4.5 to 5.5 million per cubic millimetre of blood they have carbonic anhydrase (enzyme) and hemoglobin they are called red blood corpuscles they transport gases the average life span is 120 days

=>B) leukocytes: these are known as white blood cells they are oval rounded or irregular in shape WBCS have nuclear but are devoid of haemoglobin theirnumber is approximately 7000 to 10000 per cubic mm they are of two kinds
==>B.1
==>B.2) granulocyte: granulocytes possesses granules of varying sizes and have logged nuclei
they are of three kinds
====> B.2.1) basophils
====>B.2.2) acidophils
====>B.2.3) neutrophils
based on staining features
monocytes and lymphocytes are two types of agranulocytes .they are non - granular and always have only one nuclei individual cell

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