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The Structure of the Respiratory System

Class presentation on the Respiratory System

jake ellis

on 27 August 2010

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Transcript of The Structure of the Respiratory System

The Structure of the Respiratory System
Upper Respiratory Composed of
nasal cavities
The Mucosal lining protects the respiratory tree. The mucus itself traps airborn particles purifing the air passing through the cavities. you produce 125 ml of mucus each day The nasal Septum seperates
nose into two cavities The mucus membrain warms
and moistens air
The nose is the body structure that
enables the sense of smell and drainage of tears
The epiglottis covers the airway during swallowing so that food will only enter the esophagus Lower Respiratory
Composed of
broncial tree
lungs The trachea is the windpipe that connects the pharynx and larynx to the lungs. Trachea branches to left and right bronchi which lead to the alreolar sacs which bring oxygen into blood. The right lung has a
larger capacity
due to the left having
heart displacement. The main function of the lungs are
breathing and pulmonary ventilation The bronchia tree consists of
bronchi, bronchioles, and alveoli.
Bronchi are formed at the lower part of the trachea.
The primary portion enters the lungs at
a region called the hilus. The primary branch
forms a secondary branch, which then branches
into smaller tertiary bronchi. Bronchioles are smaller tube divisions of the bronchi. Its walls contain smooth muscle and no cartilage. This allows contraction and relaxation, thereby regulating air flow to the alveoli. Alveoli are tiny ends of the alveolar ducts. These tiny air sacs function to exchange oxygen and carbon dioxide in the blood. Certain respiratory diseases cause a thickening of the alveoli walls, which restricts movement, causing breathing difficulties.

The mediastinum is the location that seperates the right lung from the left Cilia(hairs) catch dust particles in the nose, nasal passsages, as well as the bronchis The larynx is the voice box The pharynx serves as an airway and passage for food
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