Reversible Combination of Oxygen with Hemoglobin

The chemistry of hemoglobin is presented in Chapter 32, where it was pointed out that the oxygen molecule combines loosely and reversibly with the heme portion of hemoglobin. When Po2 is high, as in the pulmonary capillaries, oxygen binds with the hemoglobin, but when Po2 is low, as in the tissue capillaries, oxygen is released from the hemoglobin. This is the basis for

Figure 40-8

Oxygen-hemoglobin dissociation curve.

Figure 40-8

Oxygen-hemoglobin dissociation curve.

Pressure of oxygen in blood (Po2) (mm Hg)

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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  • jonas
    When hemoglobin loose combinations whith oxegen?
    3 years ago

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