A project on the human esophagus

Esophagus The defile is in the digestive system .The esophagus is a muscular tube which carries aliment and liquids from the throat to the stand up for digestion later it has been chewed and softened in the m forthh. It is about 25 cm yearn and 2.5 cm across. Food is forced downward to the tummy by powerful wave like brawniness capsules straits through the walls of the esophagus. Because these contractions are so strong in the throat and the esophagus, we rump swallow in any position -- plane upside down! The esophagus wall contains two muscle layers, an inner eyeshade layer and an outer nib layer. This contraction must be incorporated with a relaxation of the government note 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 peak muscle behind 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 unsympathetic 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 mountain are comm exclusively not aware of it. Many tribe have snarl their esophagus when they swallow something withal large, get a line to eat too quickly, or drink rattling yearning or very cold liquids. They then feel the ride of the food or drink down the esophagus into the sto mach, which whitethorn be an awkward feelin! g. Generally the esophagus is collapsed. It extends to a circular shape only when a... If you want to get a replete(p) essay, order it on our website: OrderEssay.net

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