Given graph shows the amount of oxygen in four blood samples, $E_{1}, F_{1}, G$ and $H$ taken at the

Question

Given graph shows the amount of oxygen in four blood samples, $E_{1}, F_{1}, G$ and $H$ taken at the same time from different blood vessels in the body.\ The diagram here, shows the blood circulation in our body.\ Which blood samples ( $E, F, G$ or $H$ ) have been most likely taken from parts $P$ and $Q$ respectively of the circulatory system shown here?\

Professor PC Thomas Classes · Answer

(c)\