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Respiratory System

Structure Functions How smoking affects the lungs
by

andres villacorta

on 29 April 2010

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Transcript of Respiratory System

Respiratory System

By:Andres Villacorta and Natalia Cuglievan Structure Function The respiratory system moves oxygen from the outside environment into the body
It also removes carbon dioxide and water
After air enters the alveoulus oxygen passes through the wall of th aleveoulus and then transports through the capillarie wall into the blood system Alveolis are hollow air sacs sorrounded by capillaries
As blood flows threw the capillaries oxygen moves from the alveoli into the blood system
At the same time, carbon dioxide moves from the blood into the alveoli Alveolis are like grapes, tiny sacs of lung tissue specialized for the movement of gasses between air and blood. On the path from outside the body into the lungs,air passes threw several structures that clean, warm and moisten
Once in the lungs, the oxygen in the air can enter your bloodstream The lungs are the main organs of the respiratory system
The pharynx is the only part of the respiratory system that is shared with another digestive system
The cells that line the nasal cavities have cilia, tiny hairlike extensions that can move together in a sweeping motion
As air travesl from the outside environment to the lungs, it passes through the following structures: nose, pharynx, trachea, and bronchi


Nose: air enters the body through two nostrils
Pharynx: Air moves from the nose into the throat
Trachea: The trachea leads from the pharynx toward the lungs
Bronchus: Air moves from the trachea into the right and left bronchi
Lung: After air reches the lungs, it moves through the smaller and smaller airways until it reaches the alveoli



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