OESOPHAGUS
March 15th, 2010
The muscular coat (tunica muscularis) corresponds to the tubular shape of the oesophagus which, to accomplish the function of propelling the bolus must dilate and contract. The muscular coat is arranged in two layers; the outer longitudinal layer (dilating the oesophagus) and an inner, circular layer (constricting the oesophagus).In the upper third of the oesophagus, both layers consist of striated muscles but distally they are gradually replaced by smooth fibers that in the lower half of the oesophagus they are composed almost exclusively of smooth fibers.medical coding training hyderabad makes you spend more time with patients and increase the quality of the care.
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