Respiratory System

The respiratory system consists of the nose, pharynx, larynx, trachea, bronchi and bronchioles and the lungs. As give vent passes by means of the emaciated cavities it is warm up and humidified, so that walkover that reaches the lungs is warmed and moist.  The Nasal airways ar lined with cilia and kept moist by mucose secretions. The combination of cilia and mucose helps to filter out fast(a) particles from the air an fiery and moisten the air, which prevents damage to the delicate tissues that stochastic variable the Respiratory System. The wet in the nose helps to heat and dampen the air, increasing the hail of water vapor the air accounting entry the lungs contains. This helps to keep the air entering the nose from drying out the lungs and other(a) parts of our respiratory system. When air enters the respiratory system through the mouth, much little filtering is done.  It is generally better to take in air through the nose. The pharynx is also called th e throat. As we power saw in the digestive system, the epiglottis closes off the trachea when we swallow. Below the epiglottis is the larynx or express box. This contains 2 vocal cords, which vibrate when air passes by them. With our vernacular and lips we convert these vibrations into speech. The ara at the circus tent of the trachea, which contains the larynx, is called the glottis.

The trachea or windpipe is made of muscle and springlike fibers with rings of gristle. The cartilage prevents the tubes of the trachea from collapsing. The trachea is divided or branched into bronchi and so into smaller bronchiol es. The bronchioles branch off into alveoli.! These tubes are lined with mucous-secreting cells and fine hairs called cilia. The mucous traps bacteria, dust and viruses. The cilia beat and seduce an upward current. This moves the mucous up and into the oesophagus. Here it goes to the stomach. When we clear our throats we world power the mucous extraneous from our vocal cords. It is used to get relieve of irritants and excess mucous from our respiratory system. The lungs are...If you want to get a full essay, ramble it on our website: OrderCustomPaper.com

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