Q. In the diagram given in the previous question, the function performed by $A,B$ and $C$ are as follows $A$ – Diffusion of $O_{2}$ to blood $B$ – Diffusion of $CO_{2}$ $C$ – Exchange of gases takes place Select among $A,B$ and $C$ which one is correctly matched and choose the correct option accordingly
A) Only A
B) Only B
C) Only C
D) A, B and C
Explanation
A – Alveolar cavity through which the diffusion of oxygen to blood takes place. From blood, $CO_{2}$ goes to the alveolar cavity B – Blood transports $O_{2}$ and $CO_{2}$ from all over the body C – Capillary wall is the actual site through which the exchange of $O_{2}$ and $CO_{2}$ takes place. It lies close to the alveolar wall
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.