The Gas Exchange Includes Delivery Of Oxygen To

The gas exchange includes delivery of oxygen to To capillary bed and elimination 2 from a blood stream in a small circle Blood circulations. Effective and long removal 2 from blood depends From adequate ventilation of lungs. Relations between ventilation and PaCO2 Can be presented as follows: PaCO2 = (k) (VCO2)/VA. In Which VCO2 is a metabolic stream (manufacture) 2 (that Is, maintenance 2 in a blue blood), k - a constant and VA - speed Alveolar ventilation. Therefore, PaCO2 increase as from reduction VA, and at all kinds hypoventilation of lungs. As space And a surface of alveoluses and also can work not effectively ( The age, etc.) increase PaCO2 conducts illnesses of bronchial tubes to reduction Percentage of oxygen with the subsequent . Alveolar ventilation can decrease, When the physiological dead space of lungs (that increases Is, VD/VT a parity). Physiological dead space Increases, when ventilation of lungs increases and it leads To parity infringement blood and volumes of a stream alveolar Air.