Why is it necessary to stop the mixing of Oxygenated and Deoxygenated blood?
Answers
If oxygenated and deoxygenated blood mix, then the oxygen in the fresh and oxygenated blood will get diluted, and the amount of oxygen required by the cells will not be fulfilled. Therefore, there are valves in the heart for the prevention of this mixing, and also a separation between the two sides of the heart.
Human beings require high energy needs for various daily activities they perform. To ensure the energy for the performance of day to day activities, we need more oxygen for generating more energy currencies.
Oxygenated blood is the blood that is present with oxy-haemoglobin and thus provide more oxygen to cells. Hence more oxygen implies more energy and therefore more efficiency.
But if deoxygenated blood gets mixed, then the oxygenated blood gets impure due to which the oxygen content reduces and causing a disrupt in the energy levels. Hence deoxygenated blood must be prevented from mixing.
To prevent mixing of blood, a thick wall called septum is present in human hearts distinguishing all the chambers of heart from each other.
But aquatic animals like fish have two chambered hearts and can undergo mixing of blood as they have low energy needs.
Hope my answer helped !