Describe the major processes of CO2 uptake by the blood in a systemic blood capillary.

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Describe the major processes of CO2 uptake by the blood in asystemic blood capillary.

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Answer CARBON DIOXIDE TRANSPORT IN THE BLOOD Carbon dioxide is transported by three major mechanisms The first mechanism of carbon dioxide transport is by blood plasma as some carbon dioxide molecules dissolve in the blood Dissolved CO2 Although carbon dioxide is not considered to be highly soluble in blood a small fractionabout 7 to 10 percentof the carbon dioxide that diffuses into the blood from the tissues dissolves in plasma The dissolved carbon dioxide then travels in the bloodstream and when the blood reaches the pulmonary capillaries the dissolved carbon dioxide diffuses across the respiratory membrane into the alveoli where it is then exhaled during pulmonary ventilation The second mechanism is transport in the form of bicarbonate HCO3 which also dissolves in plasma Bicarbonate buffer A large fractionabout 70 See Answer

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