Question

Where does hemoglobin become oxyhemoglobin?

Answer 1

Alveoli:

1. The iron-containing pigment haemoglobin is responsible for the blood's red color.
2. When oxygen is added to haemoglobin, oxyhaemoglobin is produced.
3. In the alveoli, where p${\mathrm{O}}_2$ is high and p${\mathrm{CO}}_2$ is low, haemoglobin binds to oxygen. Oxyhaemoglobin is haemoglobin that has been bound to oxygen.
4. Its function is to deliver oxygen to all of the body's cells and tissues.
5. Oxyhaemoglobin is formed when each haemoglobin molecule carries four molecules of oxygen.
6. The iron is in its ferrous state, and it oxidizes reversibly and briefly to generate oxyhaemoglobin.