At the systemic capillaries, the PO₂ is in the range of the steep portion of the O₂-Hb curve.

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At the systemic capillaries, where oxygen is being offloaded to the tissues, the PO₂ is generally in the range of the steep portion of the O₂-Hb curve, meaning that even small decreases in PO₂ will result in large decreases in the amount of oxygen bound to hemoglobin. This allows for efficient oxygen delivery to the tissues.

At the Systemic Capillaries, the PO₂ Is in the Range