Question

"breathing cycle is rhythimic whereas exchange of gases is a continuous process." justify

Answer 1

Respiration has two processes:
Breathing and exchange of gases.
While breathing is the regular inhaling and exhaling of air, exchange of gases is continuous in all cells.
In the breathing cycle air is first drawn in, separated and oxygen is diffused to the blood through the alveoli. This alveoli requires exchange of gases by diffusion. This exchange is mandatory for sir to be separated and used efficiently. Each of the cells also follow this diffusion exchange process concentrating the air that needs to be exhaled and inhaled.


Breathing cycle is rhythmic because it is a regularprocess 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.