At the lungs what is the ppO2 and why?

Why is a steep drop in % saturation in a slight change of ppO2 an advantage? What would the gradient look like?

What happens to the affinity of oxygen from hb as blood travels to respiring tissues and why is this important?

What is the ppO2 at respiring tissues? What happens to hb?

if hb loses it's O2 is it more or less saturated?

what do dissociation graphs show?

what does ppO2 mean?

when there is an increase in CO2 concentration where does the gradient move to and what do we call this?

why is a bohr shift an advantage?

when might a bohr shift occur?

is there more or less O2 in the atmosphere at altitude?

how might a person's blood differ if they live at high altitudes than if they live at regular altitudes?

why might a person who lives at high altitude's hb have a higher affinity for O2?

How might a peruvian's dissociation curve differ to a european's?

will a foetus have a higher affinity for O2 than their mother? why? will the foetus' gradient be further left or right?

what is myoglobin?

does myoglobin have a lower affinity for O2 than hb? Why/ why not?