Does capillaries release carbon dioxide

Capillaries themselves do not actively release carbon dioxide; rather, they facilitate the exchange of gases between the blood and surrounding tissues. In the capillaries, oxygen is delivered to cells, and carbon dioxide, a metabolic waste product, is absorbed from the tissues into the bloodstream. This carbon dioxide is then transported back to the lungs, where it is expelled from the body during exhalation. Thus, capillaries play a crucial role in the transport and exchange of these gases.