Wednesday, February 6, 2013

Carbon Dioxide Regulation by Normal Respiration

Going back to the carbon dioxide regulation, the Medulla Oblongata, a sector of the brain that controls autonomous reactions in the body, is responsible for monitoring the carbon dioxide levels and pressure. Once the medulla oblongata sees retention of carbon dioxide past normal pressures, the medulla oblongata activates respiratory reflex loops. This will in turn lead to inspiration to restore the balance or homeostatic conditions of the arterial blood gasses. The chemoreceptors that are controlled by the Medulla oblongata are indeed Carbon dioxide chemoreceptors. It is generally stated that since the medulla oblongata is bathed in carbon dioxide, it is able to use the carbon dioxide chemoreceptors within that specific area to easily monitor the transitory carbon dioxide levels. The medulla oblongata tracks the gas levels in order to make sure that acidity will be controlled. Acidity in the body is important because of the sole reason that the acids and bases in the body retain the ability to control all metabolic activities in the body. (A.C.F.A.S.P. 2009, p 2)

Note that the information here pertains to the normal Carbon Dioxide regulation and not through Chemoreception of peripheral chemoreceptors. There is a big difference as there is a Medulla Oblongata for normal CO2 regulation

Here is a picture of the Human upper body. The Medulla Oblongata is just under the brain and is where the regulation occurs with our primary carbon dioxide regulatory system( respiratory system).


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