Every living organism take breathing that means take air from the nose and exit it out through the nose. Respiration can be termed as gaseous exchange, basically two types of gases are exchanged such as Oxygen and Carbon dioxide. If person is breathing that means 2 basic processes are carried out.
1.) Inhalation : Inhalation means taking air more specifically oxygen from the surrounding.
2.) Exhalation : Exhalation means give the Carbon dioxide to external environment.
To carry out respiration, humans have respiratory system. The respiratory organs required for respiration, all the organs carry help in respiration that is gaseous exchange. Ventilation is the term used for proper amount of oxygen in the lungs.
The respiratory system includes nasal cavity, pharynx, lungs, alveoli, diaphragm (dome shaped organ) and trachea.
Process of respiration as follows:
- Humans inhale the air through the nasal cavity.
- The inhaled air enters in the pharynx into trachea.
- The oxygen will enters into lungs through bronchioles.
- Within the bronchioles air passes from primary to secondary bronchioles and then lungs filled up with air and due to air within the lungs, the lungs expands in size.
- As the lungs expands, that means volume of lungs increase leads to contraction of diaphragm which is dome shaped organ that is situated below the lungs.
- Then air enters into alveoli, the alveoli provides actual area for gaseous exchange.
- Within the alveoli the oxygen exchange with carbon dioxide.
- Again during the exhalation process, the lungs contracts that means volume of lungs decreases and it leads to expansion of diaphragm.
- Then air leaves the lungs and through the nasal cavity the air exhaled outside.