Maximum amount of oxygen is exchanged from th | vedclass

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(B) The exchange of gases occurs primarily at the level of capillaries. Oxygen is released from the blood into the tissue cells because the partial pr

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capillaries surrounding tissue cells

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(B) The exchange of gases occurs primarily at the level of capillaries. Oxygen is released from the blood into the tissue cells because the partial pressure of oxygen $(pO_2)$ is lower in the tissues compared to the blood. Conversely,carbon dioxide is picked up from the tissues. While oxygen is taken up by the blood in the capillaries surrounding the alveoli (pulmonary circulation),the maximum exchange of oxygen *from* the blood to the body cells occurs at the systemic capillaries surrounding the tissue cells.

Maximum amount of oxygen is exchanged from the blood at the . . . . . . .

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