What is formed when oxygen binds with haemoglobin in the blood?

When oxygen binds with haemoglobin in the blood, the compound formed is oxyhaemoglobin. This process occurs in the lungs, where haemoglobin, a protein contained in red blood cells, picks up oxygen molecules. The resulting oxyhaemoglobin is crucial for the efficient transport of oxygen throughout the body, enabling the cells to perform vital functions that require oxygen for energy production. This binding is a reversible process, allowing oxygen to be released in tissues where it is needed, thus sustaining cellular respiration and overall metabolic activity. Understanding the role of oxyhaemoglobin is essential in discussions about respiratory physiology and the circulatory system's function in delivering oxygen to body tissues.