Rhetorical Analysis On Teenagers And Tattoos

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English > Library > TRAINER System™ Downloads > Article by Dr John Flutter Biochemistry and Physiology of Breathing Why do we breathe? • To deliver oxygen to body cells • To remove excess CO2 Oxygen Body cell requirement 2-3% Atmospheric content 21% • Oxygen does not have to be stored. It is always available • Its purpose is to provide energy and to regenerate cells Carbon Dioxide Body requirement 6.5% or 40mm Hg Atmospheric content 0.03% • It has to be produced by the body and stored • It is stored in the lungs at 6.5% • It is stored in arterial blood at 40mm Hg pressure • It is produced as a by product of exercise and digestion When the child breathes through the mouth the stored carbon dioxide in the lungs escapes. This results in reduced levels of carbon dioxide in the lungs and reduced levels of carboxyhaemoglobin in the blood. Many of the problems associated with chronic mouth breathing are as a result of this lowered level of carboxy-haemoglobin in the body. Carbon Dioxide Has 4 major functions in the body • It facilitates release of oxygen from haemoglobin • It triggers breathing by activating the medullary sensor • It maintains pH by buffering with bicarbonate or carbonic acid • It prevents smooth muscle from going into spasm All these functions are reduced or impaired in children who are chronic mouth-breathers. What makes us breathe? Although we breathe subconsciously the point that we inhale is determined chemically. As carbon dioxide builds up in the body it changes the pH of the blood and this pH shift triggers the brain to tell us to take a new breath. The Medullary Trigger reacts to levels of CO2 in the body of approximately 40mm Hg, producing a normal breathing pattern What is normal breathing? • Gentle wave pattern • 4-5 litres of air per minute • 8-10 breaths per minute • Breathing in and out through the nose This is about one breath every six

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