Q. Blood that flows from the lungs to the heart is bright red rather than dark red due to
A) Carbon dioxide
B) Oxygen
C) Both (a) and (b)
D) Due to mixing of sputum
Explanation
Blood flowing from the lung to the heart through the pulmonary vein is rich in $O_{2}$. Due to $O_{2}$, its colour appears bright red rather than dark
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.