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pO2 mmHg
partial pressure of oxygen
Hgb SO2%
hemoglobin oxygen saturation percent
Where the A curve takes place
lungs
What the B curve represents
normal oxygen saturation
Where the C curve occurs
tissues
pO2 mmHg and Hgb SO2% relationship
proportional (one increases, the other increases)
Why does Hgb load up on O2 in the lungs?
Low acid environment which allows Hgb to load up on O2 in lower air pressure
Why does Hgb give up O2 in tissues?
high acid environment, high temperature
Muscle relationship with oxygen saturation
Muscles use O2, give up CO2, lowering pH levels