Indicate the substance formed in the capillaries of the lungs during gas exchange.

The substance formed during gas exchange in the capillaries of the lungs is called oxyhemoglobin. It is oxyhemoglobin that delivers oxygen from the alveolar air to the tissues of the body. Oxyhemoglobin is formed due to the interaction of an oxygen molecule coming from the alveolar air with the hemoglobin of erythrocytes in the capillaries in the venous blood.

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