Oxygen Affinity

Question 1

What is the partial pressure of a gas?

Answer 1

A measure of concentration of that gas in a mixture of gases

Question 2

Where will haemoglobin have a higher affinity for oxygen?

Answer 2

Oxygen-rich areas (e.g lungs) where there is a high pO2, promoting oxygen loading

Question 3

Where will haemoglobin have a lower affinity for oxygen?

Answer 3

Oxygen-starved areas (e.g respiring tissues) where there is a low pO2, promoting oxygen unloading.