CO2 Transport By Blood Flashcards
Which 3 things protect against proton concentrations in blood?
Buffers, respiratory system, renal system.
What is the carbonic-acid-bicarbonate buffer?
Buffer which controls pH of solution, depending on the ratio of CO2 to the amount of HCO3- ions.
What is the normal pH of blood?
7.4
What is the pH of acidosis in blood?
Lower than 7.35
What is the pH of alkalosis in blood?
Above 7.45
What causes respiratory acidosis?
Retention of carbonic acid.
What causes non respiratory acidosis?
Increase in non-carbonic acids in body, as CO2 decreases.
How can CO2 be carried in the blood?
In solution, as bicarbonate ions or carbamino compounds.
What form is most CO2 carried around the body in?
Bicarbonate ions.
What is the Fick principle?
That CO2 output equals…
Arterio-venous difference x cardiac output
How is oxygen transport different to CO2 transport?
There are 2 ways for oxygen to be carried, carried at 200ml/l, the oxygen curve plateaus, has the Bohr shift.
What is the Haldane effect?
Where oxygenation of blood in lungs displaces CO2 from haemoglobin, causing increased removal from body.
