Notes from NEET topper
The transport of gases in the human body primarily involves the movement of oxygen (O2) and carbon dioxide (CO2) between the respiratory system, circulatory system, and various body tissues. Here’s an overview of how this transport occurs:
Respiration in the Lungs: In the lungs, oxygen is inhaled from the external environment and diffuses across the thin respiratory membrane into the bloodstream. This process is called pulmonary diffusion. At the same time, carbon dioxide, a waste product of metabolism, is removed from the bloodstream and expelled from the body during exhalation.
