Biochemistry and Physiology of respiration
Why do we breathe? To deliver type O to body cells To remove excess CO2 oxygen physical structure cell requirement 2-3% Atmospheric content 21% Oxygen does not have to be stored. It is always available Its utilisation 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 melodic phrase at 40mm Hg pressure It is produced as a by product of exercise and digestion When the child breathes through the mouth the stored century dioxide in the lungs escapes. This results in reduce levels of carbon dioxide in the lungs and reduced levels of carboxyhaemoglobin in the blood. Many of the problems associated with chronic mouth breathing be as a result of this lowered level of carboxy-haemoglobin in the body.
Carbon Dioxide Has 4 major functions in the body It facilitates disclose of oxygen from haemoglobin It triggers breathing by activating the medullary sensor It maintains pH by buffering with bicarbonate or carboniferous acid It prevents smooth muscle from going into spasm every last(predicate) these functions be reduced or impaired in children who are chronic mouth-breathers. What makes us breathe? Although we breathe subconsciously the prefigure 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 wit to tell us to take a new breath. The medullary knowledgeableness 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 star breath every six seconds What goes wrong? The Medullary Trigger resets itself Through constant exposure to CO2 levels...If you want to carry a full essay, order it on our website: Orderessay
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