Respiratory system It is a group of organs responsible for gas exchange, represented by taking in oxygen and excreting carbon dioxide. The respiratory system in humans includes the nose, pharynx, larynx, bronchi, bronchi, and lungs. These organs have the special function that they perform in the breathing process, and the importance of the respiratory system lies in that it provides the sufficient amount of oxygen that all cells need to carry out the process Cellular respiration, and if a defect and disorder occurs in the respiratory system, it will lead to a lack of oxygen reaching the cells, and this condition is known as hypoxia and this will affect the All cells of the body, and in particular it will affect brain cells and lead to their death.

Parts of the respiratory system

• The nose is the external breathing organ and its main function is to bring oxygen-laden air through the sinuses. The importance of air passing through the nasal cavity and sinuses lies in humidifying the air and regulating its temperature, in addition to trapping dust and foreign particles through Holding it with the mucus lining the nose.
• Pharynx, It is one of the parts of both the digestive and respiratory systems, and the pharynx is a passage containing the epiglottis, which separates the air passage from the food passage.
• The trachea, is a tube that branches into two tubes, each of which connects to one lung, and its function The bronchial tubes is the delivery of air from the nose to the lungs, and the bronchial tubes are lined with small cilia that collect germs and dust and expel them through the mucus.
• bronchial bronchi, are small branches of bronchi inside the lungs. Inside the right lung there are three lobes or bronchi, while the left lung contains only two. The importance of the bronchi lies in that they deliver air. To various parts of the lungs.
• Alveolar, They are the delicate part of the lung responsible for the gas exchange process. There are approximately 300 million alveoli in the lungs. The alveoli are surrounded by a fine network of blood capillaries so that gases are exchanged between them and Alveoli.

Respiratory system diseases

Respiratory system diseases are divided into two main parts: viral and bacterial diseases, and bacterial pneumonia, and the second part is chronic diseases such as: asthma and chronic obstructive pulmonary disease.