☆ What is Respiratory system?
Respiratory system is a catabolic process (break down of food into simple form) and also biochemical process.It defined as ” Exchange of environmental oxygen into carbon dioxide take place between body and the outside complete environment.”
- In other words we can say exchange of gases (viz. Oxygen and carbon dioxide) and oxidation of food. is Respiratory system.
“A process in which oxidation of organic compounds occurs in cell and energy is released is called as Respiration.”
Environmental Oxygen–>utilized by the organism———>to break down food ——–>Energy released ( by various activities in cells)———–>Carbon dioxide ( outer environment).