Breathing is a process in which air moves inside the body and outside the body. It consists of two phase:
Inhalation: Air enters the body of a living organism in this process.
Exhalation: In this process, air is released outside the body of a living organism.
Breathing rate: It can be defined as the number of times a person can breathe in a minute. With the increase in physical activity the breathing rate increases.
The above figure shows the respiration process. In this process, oxygen-rich air enters the body through the nose. From nose, it is transferred to trachea through pharynx and larynx where primary filtration of air takes place. From trachea, air is transferred to the bronchioles in the lungs. Bronchioles are the passageways to the alveoli.
Respiration in animals:
In this article we studied the respiration process and how the flow of air takes place in a living organism. We also got to know about the respiratory organs of different living organisms.