Q. The shape of oxygen dissociation curve plotted between $\%$ saturation of $Hb$ with $O _{2}$ and $p O _{2}$ is
Breathing and Exchange of Gases
Solution:
Oxygen haemoglobin dissociation curve is sigmoid-shaped.
The relationship between the $p O _{2}$ and the per cent saturation of haemoglobin when represented on a graph is termed as oxygen haemoglobin dissociation curve. The $p O _{2}$ in the arterial blood is about $95 \,mm\, Hg$ and the per cent saturation of haemoglobin at this partial pressure is $97 \%$.
