Function of Hemoglobin
Hemoglobin is a protein found in red blood cells that plays a crucial role in the body's oxygen transport system.
- Oxygen Transport: The primary function of hemoglobin is to transport oxygen from the lungs to the body's tissues. Hemoglobin binds to oxygen in the lungs, where oxygen levels are high, and releases it in the tissues, where oxygen levels are low.
- Carbon Dioxide Transport: Hemoglobin also helps in the transport of carbon dioxide, a waste product of cellular metabolism, from the tissues to the lungs for exhalation. It binds to carbon dioxide in the tissues and releases it in the lungs.
- Buffering: Hemoglobin acts as a buffer in the blood, helping to maintain the pH balance by binding to and releasing hydrogen ions.
- Regulation of Blood Flow: Hemoglobin can also regulate blood flow by releasing nitric oxide, which helps to dilate blood vessels and improve blood flow.
- Storage of Nitric Oxide: Hemoglobin can store and transport nitric oxide, which plays a role in regulating blood pressure and immune response.
Overall, hemoglobin is essential for the proper functioning of the body by ensuring the efficient transport of oxygen and carbon dioxide, maintaining pH balance, regulating blood flow, and storing nitric oxide.

Human Haemoglobin Is A Red Colored Respiratory Pigment And Stands For Iron Containing Protein .
Due To This The Blood Looks Red And If It Lacks Can Cause Anaemia
Mostly ,It Binds The Oxygen Gas and It Has Affinity Of Haemoglobin For Various Gases Which States That It Mostly Transports Carbon Monoxide Rather Than Oxygen Provided As
Option.Carbon Dioxide More Soluble Than Oxygen And Found In Plasma .HENCE ,The Carbon Dioxide Doesn't Transported By Blood Mostly.