A project on the human esophagus

Esophagus The gullet is in the digestive system .The defile is a muscular tube which carries sustenance and liquids from the pharynx to the tolerate for digestion later it has been chewed and softened in the m forbiddenh. It is about 25 cm yearn and 2.5 cm across. Food is forced downward to the plunk for by powerful wave like go across compressings exceedingly through the walls of the esophagus. Because these contractions are so strong in the throat and the esophagus, we rump swallow in any position -- all the same upside down! The esophagus wall contains two muscle layers, an inner eyeshade layer and an outer nib layer. This contraction must be duplicate with a relaxation of the bank bill muscle and a contraction of the longitudinal muscle in front of the bolus. At the same time, muscles at the top of the esophagus relax, and the bolus is squeezed into the esophagus. A bolus is literally squeezed forward by a coordinated contraction of the greenback muscle behin d it. The muscular layers of the esophagus are wasted together at both ends by muscles called sphincters. When a somebody swallows, the sphincters relax automatically to allow food or deglutition to pass from the mouth and into the stomach.

The muscles then unopen rapidly to counteract the swallowed food or drink from leaking out of the stomach venture into the esophagus or into the mouth. This is automatic and plenty are comm exclusively not aware of it. Many nation have snarl their esophagus when they swallow something withal large, canvass to eat too quickly, or drink rattling ardent or very cold liquid s. They then feel the vogue of the food or ! drink down the esophagus into the stomach, which whitethorn be an awkward feeling. Generally the esophagus is collapsed. It extends to a circular shape only when a... If you want to get a plenteous essay, order it on our website: BestEssayCheap.com

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