Blood .........An essential component of body.

This article is about blood.As we all know blood is very essential for existence of life.So we should aware about it.

Friends,
Blood is made up of blood plasma and its cells floating in blood plasma.In blood lifeless plasma present 65% and live cells present 35%.Plasma contains 90% water and 10% other matters.
Blood Group
In 1902 a nobel price winner karl landsteiner discover blood groups.There are four type of blood groups in human body.

1. Blood group A


2. Blood group B


3. Blood group AB


4. Blood group O

A person having blood group O can donate blood to everyone,that is why it is called universal donar and having blood group AB can takes blood from every person so it is called universal recipient.

Blood group	Blood recipient group	Blood donation group
A	A,AB	A,O
B	B,AB	B,O
AB	AB	A,B,O,AB
O	O	A,B,AB,O

RH factor
It is a type of antigen which is found in red blood cells.If this factor found in a person body then he is RH⁺ and otherwise he is RH^-.In India 97% people are RH⁺.If a person having RH⁺ donate blood to a person having RH^- then that person might be dead.
Red blood cells and White blood cells
Red blood cells
These cells are red in color due to presence of red pigment called heimoglobin.Heimoglobin Supply Oxigen to every cell and extract CO₂ from body.The life span of RBC is 120 days.These are formed in bone marrow.
White blood cells.
These cells are unstructured in shape.Its life span is small as compared to RBC.Its life span is 24 to 30 hours.These are also formed in bone marrow.It main function is to separate dead components from body and transfer of blood and prevent body from infectious diseases.
Friends,
I hope you will enjoy the article by getting useful knowledge from this.
Thank you.
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