What is the pH of
blood?
a) 6.4
b) 6.8
c) 7.0
d) 7.4
Explanation: In the absence of pathological states, the pH of the human body ranges between 7.35 to 7.45, with the average at 7.40.
How % of carbon dioxide is carried as carboxyhaemoglobin?
a) 70
b) 43
c) 23
d) 0.03
In carboxyhaemoglobin, carbon dioxide combines with which part of the haemoglobin?
a) amino part
b) carbonyl part
c) globin part
d) oxygen part
Explanation: CO2 is carried by haemoglobin as carbamino-haemoglobin.
When the carbon dioxide combine with haemoglobin to carboxhaemoglobin?
a) when partial pressure of oxygen is higher in tissue
b) when partial pressure of carbon dioxide is higher in tissue than blood
c) when partial pressure of oxygen is lower in blood
d) when partial pressure of carbon dioxide is lower in blood than tissue
Explanation: because in the tissues the pCO2 is high and pO2 is low.
When the carbon dioxide releases from carboxhaemoglobin?
a) when partial pressure of oxygen is higher in tissue
b) when partial pressure of carbon dioxide is higher in tissue than blood
c) when partial pressure of oxygen is lower in blood
d) when partial pressure of carbon dioxide is lower in blood than tissue
How % of carbon dioxide is carried as dissolved in plasma?
a) 7
b) 4
c) 23
d) 70
