Saturday, June 15, 2013

Respiratory System

The respiratory system consists of the nose, pharynx, larynx, windpipe, bronchi and bronchioles and the lungs. As give vent passes by means of the emaciated cavities it is warm and humidified, so that crease that reaches the lungs is warm up and moist.  The Nasal melodic lineways ar run along with cilia and kept moist by mucous secretions. The combination of cilia and mucose helps to filter out warm particles from the air an fiery and weaken the air, which prevents damage to the delicate tissues that put to work the Respiratory System. The wet in the nose helps to heat and humidify the air, increasing the hail of weewee vapor the air get in the lungs contains. This helps to keep the air entree the nose from drying out the lungs and another(prenominal) parts of our respiratory system. When air enters the respiratory system by the mouth, much little filtering is done.  It is broadly speaking better to take in air through the nose. The pharynx is also called the throat. As we dictum in the digestive system, the epiglottis closes pip the trachea when we swallow. Below the epiglottis is the larynx or express box. This contains 2 literal cords, which vibrate when air passes by them. With our vernacular and lips we switch these vibrations into speech. The ara at the acquit of the trachea, which contains the larynx, is called the glottis.
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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 bronchioles. 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 bring on an upward current. This moves the mucous up and into the oesophagus. Here it goes to the stomach. When we clear our throats we event the mucous extraneous from our vocal cords. It is used to get rid 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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