What is the lower respiratory tract?
together with the upper airway path is formed by the lower respiratory tract of the respiratory system. In the descending order it begins with a trachea, which is also known as a trachea. The bronchi is divided into two main bronchi and one of them enters one of the pairs of lungs. When the bronchi expands and decreases in the lungs, they eventually allow the gas exchange to be held. Instead of changing oxygen and carbon dioxide, it is known as the respiratory zone.
At the top of the lower airway is a trachea. He connects the larynx over him with the main bronchi. It is a flexible, hollow tube that can stretch the movements of the neck. It also has a set of robust cartilage rings that prevents it during breathing. This could otherwise happen due to changes in air pressure that move the air in and out of the lungs.
The two main branch of the bronchi from the trachea. Each of them carries air into separate lungs. Together there is a head of the so -called bronchial tree. The bronchial tree contains a network of ever smaller bronchial tubes that firstL better from the main bronchi. Finally, it ends in structures called bronchioles, which are extremely small.
Bronchioles are almost the smallest part of the lower airway. Alveoli are at the furthest and smallest end of the bronchial tree. This is where oxygen from the air enters the blood and carbon dioxide passes into alveoli filled with air. Here these gases pass in and out through extremely small blood vessels exposed to air.
The lungs are responsible for moving air in the upper and lower airways. When the contractual muscles are caused, they attract air. The difference in air pressure, which results in, causes the air to be stretched into the lungs. After expansion, they naturally recover from another inner breath.
The lower airways can be affected by a number of diseases and disorders. Chronic bronchitis has a negative effect on normal gas exchange and is usually observed in smokers. PneThe umonia caused by viruses or bacteria can seriously disrupt breathing by causing the fluid to accumulate in desires and in patients is a common cause of death. Tuberculosis caused by bacterial infection in the lungs has a weakened effect on the body through repeated leakage. Empymine is usually caused by smoking and is marked by permanent damage to alveoli.