10 Questions
What happens to the partial pressure of oxygen around tissues when you exercise?
It drops to below 40 mmHg
What is the percentage of hemoglobin saturation at 100 mmHg PO2?
97%
What happens to the oxyhemoglobin dissociation curve when alveolar PO2 decreases to 60 mmHg?
It remains unchanged
What is the effect of an increase in temperature on the oxyhemoglobin dissociation curve?
It shifts the curve to the right
What happens to the O2 bound to hemoglobin when the oxyhemoglobin dissociation curve shifts to the right?
Less oxygen is bound to hemoglobin
What is the effect of an increase in PCO2 on the oxyhemoglobin dissociation curve?
It shifts the curve to the right
What happens to the pH during muscular exercise in skeletal muscle?
It decreases
Why does hemoglobin give up more oxygen to the exercising muscle during muscular exercise?
Due to an increase in temperature and PCO2 and a decrease in pH
What is the effect of a rightward shift of the oxyhemoglobin dissociation curve on the exercising muscle?
It increases the amount of oxygen available to the exercising muscle
What happens to the dissolved oxygen level during muscular exercise in skeletal muscle?
It is still relatively high
Test your knowledge on the transportation of oxygen and carbon dioxide in the blood, factors affecting the oxygen dissociation curve, and types of hypoxia. Assess your understanding of cyanosis and its occurrence. This quiz covers the essential concepts of respiration and blood gas transport.
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