Haemoglobin

Hemoglobin is a protein found in red blood cells that is essential for transporting oxygen from the lungs to tissues throughout the body. It binds to oxygen molecules in the lungs, allowing red blood cells to carry this oxygen efficiently. Hemoglobin also helps carry some carbon dioxide, a waste product, back to the lungs for removal. Its structure includes iron atoms, which are crucial for binding oxygen. The proper function of hemoglobin is vital for maintaining energy levels and overall health, as it ensures tissues receive the oxygen they need to function properly.