in what forms are carbon dioxide transported in blood
Carbon dioxide is transported in the blood from the tissue to the lungs in three ways: (i) dissolved in solution; (ii) buffered with water as carbonic acid; (iii) bound to proteins, particularly haemoglobin.Approximately 75% of carbon dioxide is transport in the red blood cell and 25% in the plasma.arbon dioxide transport in the tissue is summarized in Figure 1. It combines with water to form carbonic acid. This reaction is very slow in plasma but fast within the red blood cell owing to the presence of the enzyme carbonic anhydrase.