Desoxyhemoglobin

Desoxyhemoglobin, also known as deoxyhemoglobin, is a form of hemoglobin that has released its oxygen molecules. Hemoglobin is the protein in red blood cells responsible for transporting oxygen from the lungs to the body's tissues. When hemoglobin binds with oxygen, it is called oxyhemoglobin. After delivering oxygen to the tissues, hemoglobin reverts to its desoxyhemoglobin state.

The primary function of desoxyhemoglobin is to facilitate the transport of carbon dioxide from the tissues back to the lungs. While oxygen is transported by binding to the heme group, carbon dioxide binds to the globin portion of the hemoglobin molecule. This binding of carbon dioxide to desoxyhemoglobin is crucial for the efficient removal of metabolic waste products from the body.

Desoxyhemoglobin has a distinct color compared to oxyhemoglobin. Oxyhemoglobin is bright red, while desoxyhemoglobin is a darker, purplish-red. This difference in color is why venous blood, which is rich in desoxyhemoglobin, appears darker than arterial blood, which is rich in oxyhemoglobin. The conversion between oxyhemoglobin and desoxyhemoglobin is a reversible process that occurs continuously throughout the circulatory system, driven by differences in oxygen and carbon dioxide concentrations.