10 Questions
What is the usual oxygen saturation of systemic arterial blood?
97%
What weakens the HB-O2 bond according to the text?
Increased pH
What is the molecule that shifts the oxygen-hemoglobin dissociation curve to the right?
2,3 BPG
At what partial pressure of oxygen (PO2) in the lungs does hemoglobin reach approximately 98% saturation?
104 mmHg
What happens to the affinity of hemoglobin for oxygen when pH increases?
Increases
Which gas is the most soluble in plasma?
Carbon Dioxide
What is the role of hemoglobin in oxygen transport?
To carry oxygen in two forms
What is the maximum quantity of oxygen that will combine chemically with the hemoglobin in a unit volume of blood?
1.34 ml of O2 per g of Hb
According to Dalton’s Law of Partial Pressures, what is the total pressure exerted by a mixture of gases?
The sum of the pressures exerted by each gas independently
What causes oxygen to diffuse from the alveoli into the pulmonary capillary blood?
High partial pressure of oxygen in the alveoli
Test your knowledge on the basic concepts of oxygen capacity, oxygen content, and oxygen saturation in blood. Understand the fundamental mechanisms of gas transportation in the blood.
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