Concept explainers
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A dissociation curve for hemoglobin and adaptation to living where air is “thin”. The curve showing the percentage of saturation (the amount of O2 bound to hemoglobin) at increasing values of P02. Partial pressure reflects the relative amount of gas in a mixture and is measured in millimeters of mercury 9mmHg). Llamas are native to the Andes Mountains in South America. The partial pressure of O2 in the atmosphere where live is about half of the PO2 at sea level. As a result, the PO2 in the lungs of llamas is about 50mm Hg, whereas that in human lungs at sea level is about 100mm Hg.
Concept introduction:
The hemoglobin pigment act as a vehicle for transport of oxygen in blood. The oxygen-hemoglobin dissociative curve is a curve that shows the percentage of saturated hemoglobin on the y- axis and succeeding oxygen tension on the x-axis. This curve helps in understanding the carrying and release of oxygen by blood.
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