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Discuss Factors That Control Respiration.
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DISCUSS FACTORS THAT CONTROL RESPIRATION. Stimuli that drive respiration can be classified as either chemical or voluntary... Chemical control has evolved to meet the following general needs; to insure a supply of oxygen for tissue metabolism and to remove the by product carbon dioxide and to help maintain the acid base balance of the body. Voluntary control is necessary to fine-tune the respiratory output for purposeful activities such as speech, sneezing, coughing and other behaviours but it is overridden if blood carbon dioxide rises (hypercapnia) (Medical Education, 2002 p1). The basic rhythm of respiration is controlled by groups of nerve cells that control the rate and depth of inspiration. The area which nerve impulses are sent to the respiratory muscles is called the respiratory centre and consists of groups of neurons divided into three areas; the medullary rhythmicity areas, the pneumotaxic area and the apneustic area (Tortora & Grabowski, 2000 p836)....
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