Breathing and Exchange of GasesHard

Question

Oxygen dissociation curve of haemoglobin is

Options

A.sigmoid
B.hyperbolic
C.linear
D.hypobolic

Solution

Oxygen haemoglobin dissociation curve gives the relationship between the saturation of haemo globin and oxygen tension. The curve obtained by plotting the percent saturation of Hb against time is sigmoid, at 38oC and ph 7.4 Dissociation of oxyhaemoglobin can be promoted by rise in the body temperature and low pH (high CO2).

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