Question

"the breathing cycle is rhythmic whereas exchange of gases is a continuous process".justify this statement​

Answer 1

• Breathing cycle is rhythmic because it is a regular process of inspiration and expiration in an oscillating cycle. Neuronal impulses are responsible for this control which transmits between the respiratory centers in the brain and the muscles involved in inspiration in the chest and diaphragm. Gaseous exchange is a continuous process because it involves the process of diffusion. Diffusion of gas takes place from the region of high concentration to a region of low concentration which normally involves exchange of oxygen and carbon dioxide during the process of respiration in living organism and its environment.