The exchange of oxygen and carbon dioxide takes place in between the lungs and blood. The greater part of oxygen diffuses into the blood and at the same time, carbon dioxide diffuses out. Here the question is where the oxygen would go. read more
Transport of Carbon Dioxide in the Blood. Carbon dioxide molecules are transported in the blood from body tissues to the lungs by one of three methods: Dissolution directly into the blood; Binding to hemoglobin; Carried as a bicarbonate ion; Several properties of carbon dioxide in the blood affect its transport. First, carbon dioxide is more soluble in blood than is oxygen. read more