An essay on the mechanism of breathing and its control.
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An essay on the mechanism of breathing and its control
The basic mechanisms involved in inspiration and expiration are as follows;
The contraction of the diaphragm and external intercostals muscles leading to an expansion of the lungs. This expansion means there is an increase in the volume of the thorax and a decrease in intrapulmonary pressure. A pressure gradient is therefore established from the atmosphere to alveoli, hence air being suck into the lower pressure in the lungs called inspiration or breathing in.
This involves the relaxation of inspiration m…
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