Respiratory System

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by dmartellotto
Last updated 8 years ago

Human Anatomy

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Respiratory System

Respiratory System

DiseasesAsthma: Is a chronic lung disease that imflames and narrows the airways.Pnemonia: Is a lung infection that can make you very sick. You can cough, run a fever and have difficulties while breathing.Emphysema: Occurs when the air sacs in your lungs are destroyed, making you slowly more short of breath.

Function * The respiratory system is responsible for getting oxygen into the body and removing carbon dioxide and water.

Nose * Warm, moistens and filters the air. * The air gets into your body by the nose * The openings of the nose are called nostrils * The air that you breath is cold but when it gets in it will be heated by the warm blood that flows through the vessels * Mucus in the nose moistures the air 1. Projection in the nose * Inside your nose there is a mucus and tiny hairs called cilia, they will trap all the dust, small particles and bacteria that might enter through your nose * If there is dust particles or bacteria the nose will produce a small explosion to take them out (sneezing)Pharynx * Passageway that leads to the trachea * Common name throat * Connects the nasal cavity with the trachea * It is lined with cilia that trap dirt that might gotten past the filtering in the nasal cavityLarynx * Common name voice box * series of folds of tissues surrounded by protective cartilage called vocal cords * when air passes through the vocal cords sound is made. You control the amount of air passing through the larynxTrachea * Common name wind pipe * About 12 inches long * Made up of rings of cartilage * If the epiglottis is open air passes from the pharynx to the trachea * As the air moves down the cilia trap dust particles and bacteria * Like the nose the trachea produces tiny explosions in respond to irritation, the explosions here are called coughs, during the cough air is expelled at a speed of 160 km per hrBronchi/Bronchus * Branches lead to the lungs * Each bronchus continues to branch into smaller and smaller tubes—— bronchiolesBronchioles * Smaller branches lead to the air sacs * They lead to grape like clusters of tiny ballons called —alveoliAlveoli * The functional unit of the respiratory system. This is where the oxygen and the carbon dioxide are exchange, oxygen enters the blood carbon dioxide is removed from the blood. * Each alveoli is surrounded by a network of capillaries.

Diagram (Organs)

ProtectionThe air we breath is full of harmful substances like dust, bacterias and viruses so our system needs to pretect with:Before anything reaches to your ungs they first go through the nose where they are tiny hairs called cilia that move the mucus (protects your system by acting as a barrer aand getting them out by sneezing). Cillia traps them an makes your air cleaner. If by some way it do reaches the lungs there is also cells that attack them and they can also release more white blood cells to fightt the infection.

Mechanics of BreathingThe action of breathing in and out is due to the changes due to the changes of pressure in the thorax, in comparison with the outside. When we inhale the diaphragm contract to expand the chest cavity. The diaphragm moves downwards when we inhale because it gives space for the oxygen to be in, and when we exhale the diaphragm is moving up pushing the air in the lungs to go out and is relaxing in his regular position.


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