Q. Exchange of $O_{2}$ and $CO_{2}$ between the blood and tissue is based on
A) Pressure/concentration gradient
B) Inspiratory capacity
C) Osmotic gradient
D) Tidal volume
Explanation
Pressure/Concentration gradient. Alveoli are the primary site of exchange of gases. Exchange of gases also occur between the blood and tissue. $O_{2}$ and $CO_{2}$ are exchanged in these sites by simple diffusion, mainly based on pressure concentration gradient
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.