Question

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write a short note on blood
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Answer 1

Blood:

• Blood is a fluid connective tissue.
• Blood is the chief transport system of body.
• Blood is the softest tissue in the body.
• Blood makes up 7-8% of total body weight.
• Volume of blood in a human being is 5-6 litre.
• Blood is heavier than water.
• Blood is salty in taste.
• pH of blood is 7.3 to 7.4, i.e. slightly alkaline.
• pH of blood in arteries is more than in veins
• pH of blood is maintained by balancing the ratio of sodium bicarbonate and carbonic acid.
• Buffer of the blood is sodium bicarbonate.
• Acidity of blood results haemoglobin to carry less oxygen.
• The amount of blood supplied to brain per minute is 750 ml.
• The study of blood is called Haematology.
• Blood is made up of three main components- Plasma, Blood cells(blood corpuscles) and Platelets.