The blood also transports carbon dioxide, which is the waste product of this energy production process, back to the lungs from which it is exhaled into the air. The transport of the carbon dioxide back to the lung is also achieved by hemoglobin.
Veri ka veab süsinikdioksiidi, mis on jäätmed toote selle energia tootmisprotsessi, tagasi kopsud, millelt on väljahingatavas õhku. Transpordi süsinikdioksiidi tagasi kopsu ka saavutada hemoglobiini.