Question

What will be the effect of increased concentration of $C{O}_2$ in blood on normal breathing?

• A. Remain unaffected
• B. Slow and shallower
• C. Deep breathing and rapidly
• D. Deep breathing end normally

Answer 1

The correct option is C Deep breathing and rapidly

When concentration of $C{0}_2$ increases in blood, the breathing rate increase rapidly and will be deep. The effect of Increased $C{0}_2$ is to decrease the affinity of haemoglobin for $0_2$. Thus, due to Bohr's effect the $C{0}_2$ released in respiring tissue accelerates the delivery of oxygen by faster and deeper breathing.