How does our respiratory system work ?

HUMAN RESOURCES TOOLS
the respiratory system (breathing) in humans is composed of organs consisting of:

1. Nose
In the nasal cavity there are mucus glands and nasal hair that serves to filter air entering the nasal cavity. Mucus glands produce a layer of mucus that serves to catch the dirt smooth so that the air coming into the throat to be cleaner. The function of the nasal cavity, namely:
Place of entry of air Filter air through the fine hairs and mucus in the nose.As the sense of smell2. Faring (Tekak)
The pharynx is the intersection between the respiratory tract (throat) and the gastrointestinal tract (esophagus) that serves to pass the air into the larynx.

3. Larynx (larynx)
Larynx is the area of ​​the larynx, serves as a place of attachment of membrane or vocal cords. On the larynx there is an epiglottic valve that is automatically closed while swallowing food until it does not enter the respiratory tract. Laryngitis (laryngeal infection) occurs when dirty air enters. The more severe symptoms cause swelling of the vocal cords until hoarseness.

4. Trachea (Throat)
The trachea is located in front of the esophagus and is composed of ring-shaped bones. The inner wall of the trachea is coated by a hairy epithelial tissue (ciliated), which functions to retain and remove airborne dirt from passing into the lungs and expelled through sneezing.

5. Bronchus and Bronchiolus
Bronchus is a branching trachea that serves to bring air to the left and right lung. The branching of the bronchi in the lungs is called Bronchiolus

6. Lung (Pulmo)
The lungs are the respiratory organs located within the chest cavity and consist of two parts, the right lung (consisting of three lobes) and the left lung (consisting of two lobes). In the lungs there are bronchus and bronchioles. The bronchioles suffer from the branching at which the alveoli bubble is located. Alveolus is very small and numerous air bubbles, and serves as a respiratory air exchange of CO2 with O2 in the lungs.