A person having anaemia is likely to suffer from:
A.Anoxia
B.Hypoxia
C.Asphyxia
D.None of these
Category: Respiratory System Physiology Mcqs
Under certain conditions, an increase in P50 value of haemoglobin would bring which of these changes in the affinity of pigment to combine with oxygen:
A.Fall
B.Rise
C.First rise and then fall
D.No change
Oxygen in the blood is transported mainly by:
A.Blood plasma
B.WBCs
C.RBCs
D.Platelets
Oxygen capacity of haemoglobin is:
A.The amount of oxygen which 1 gm of haemoglobin can bind
B.The amount of oxygen which haemoglobin exchanges with similar amount of carbondioxide
C.The amount of oxygen which is present in blood of alveolar circulation
D.None of these
Which of these factors influence our respiratory centre:
A.CO2
B.Water vapour
C.Both (a) & (b)
D.None of these
Which of these facts sugests that oxygen is transported from lungs to the tissues combined with haemoglobin rather than dissolved in blood plasma:
A.Haemoglobin can combine with oxygen
B.Oxygen carrying capacity of whole blood is higher than that of plasma
C.Oxyhaemoglobin can dissociate into haemoglobin and oxygen
D.Increase in CO2 concentration decrease the O2 affinity of haemoglobin
How can combining of haemoglobin with oxygen in the lungs be promoted?
A.By decreasing the concentration of oxygen in blood
B.By increasing the concentration of oxygen in blood
C.By increasing the concentration of CO2 in blood
D.By inducing CO in the blood
The dissociation of oxyhaemoglobin would increase under a given concentration in blood in case:
A.pH of blood raises
B.pH of blood falls
C.Concentration of CO2 falls
D.Free fatty acid concentration falls in blood
Respiration in absence of oxygen is termed:
A.Aerobic
B.Anerobic
C.Both (a) & (b)
D.None of these
