Question

What is the role of haemoglobin in the blood?

Answer 1

Hint: Haemoglobin is the respiratory pigment found in the red blood cells which are biconcave to accommodate it. This molecule is made up of four components of the heme group and an iron centre. This structural arrangement helps it to form the most life-saving function of haemoglobin.

Complete answer:
Haemoglobin is found in red blood cells which has the principal function of transferring oxygen from the lungs to the needy tissues of the body. Haemoglobin can bind to oxygen and gaseous nitric oxide. This binding has a very important role in transporting oxygen. The blood passes along the lungs and dissemination of oxygen in the red blood cells takes place. This enables the haemoglobin to bind to oxygen and nitric acid. The nitric oxide helps in relaxing the walls of the arteries and blood vessels permitting expansion. Therefore, the oxygen-containing red blood cells can efficiently more through them and reach the tissues in need.
Also, seventy-percent iron in the body is found in haemoglobin. Whenever there is a low concentration of iron in the body, haemoglobin comes into play and depletes to fulfil the necessary void. But if there is too much deficiency and the iron stores get exhausted, then it can lead to anaemia and iron depletion in the body. This is the role of haemoglobin in the body and why it is known as the most important and respiratory pigment.

Note: The people who are interested in blood donation can lose two hundred fifty to three hundred milligrams of iron in one go. Therefore, they should have a proper diet containing iron and must go for a regular check-up before donating blood. Frequent blood donation can lead to Anemia in the donor and this might lead to serious consequences. Hence, it is advised to donate after three months once donated.