Question

Which of the following statements best defines the oxygen-hemoglobin dissociation curve?a) a graphical representation of the amount of oxygen found in the atmosphereb) a graphical representation of the relationship between hemoglobin's percent saturation and the partial pressure of oxygenc) a graphical representation of the amount of hemoglobin found in the bloodd) a graphical representation of the amount of oxygen bound to hemoglobin and how that affects the partial pressure of O2 in the blood

Answer 1

Answer:

b) a graphical representation of the relationship between hemoglobin's percent saturation and the partial pressure of oxygen

Explanation:

On vertical axis-hemoglobin's oxygen saturation

On horizontal axis-oxygen partial pressure

This curve determines hemoglobin affinity for oxygen. If hemoglobin has high oxygen saturation, hemoglobin's affinity for oxygen is high.

As the blood moves through the systemic capillary, hemoglobin's affinity for oxygen decreases, so that oxygen can be released into the cells.