The respiratory system defines the anatomical system that an organism has which leads to an introduction of respiratory gases into the body
and carries out exchange of gases. Respiration is the process by which air enters into the lungs through the nose or mouth and it is exhaled back to the environment. During inhalation the big muscle that splits the thorax from the abdomen is condensed, making the thorax to expand and let air into the lungs. The intercostal muscles are also concentrated so as to enlarge the chest.
During exhalation the opposite happens, the diaphragm is increased; intercostal muscles reduce the capacity of the thoracic cavity and exclusion of air from the lungs. At this junction bronchi and bronchioles are also decreasing, reducing the span and the number of shortening, which helps them exclude the air.
Why is respiration important:
Respiration is a very vital process to both human, plant and animals. Without respiration, animals, plants and humans cannot sustain life. Respiration is a key process in helping human and animals to take in fresh oxygen which is useful in a number of processes in the body and take out bad air called carbodioxide to the atmosphere. The by-product of respiration in human and animals can be toxic if not removed from the body, but in plants this toxic substance is very helpful in photosynthesis and in the germination of seeds. Plants also help in the process of respiration by releasing oxygen as a by- product of photosynthesis.
The reason why inhalation is active and expiration is passive:
This is because of the technique through which the inhalation method is controlled by the nervous systems. The self-sufficient system is the major part that controls and regulates the actions of the inner organs such as the intestine, sweat glands, saliva glands, blood vessels, heart, kidney and many others.
The major work of this nervous system is to sustain homeostasis that is the steadiness of the internal atmosphere of the body for example body temperature, water equilibrium, blood pressure, hormones level, acid-base stability.
There are two parts of the nervous system which include sympathetic system which is the thrilling element of the system and its function is to enhance the actions of lots of organs and systems of an organism. Parasympathetic does the opposite of sympathetic by inhibiting the actions of these organs and systems. Its major work is to cooperate between concurrent activities of these subsystems and facilitate the steadiness of the inner atmosphere of the body and the equilibrium of physiological methods.
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