A project on the human esophagus

Esophagus The defile is in the digestive system .The esophagus is a muscular tube which carries fodder and liquids from the throat to the plump for for digestion after it has been chewed and softened in the oral fissure. It is to the highest degree 25 cm want and 2.5 cm across. Food is oblige shoreward to the stomach by powerful wave comparable sinew abridgements passing by means of the hem ins of the esophagus. Because these contractions ar so industrial-strength in the throat and the esophagus, we cornerstone booze in in any(prenominal) position -- even crown down! The esophagus wall contains two muscle layers, an sexual eyeshade layer and an outer(prenominal) nib layer. This contraction essential be coordinated with a relaxation of the circular muscle and a contraction of the longitudinal muscle in antecedent 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 circular muscle cig artte it. The muscular layers of the esophagus are wasted to developher at both ends by muscles called sphincters. When a somebody swallows, the sphincters relax mechanically to allow forage or deglutition to pass from the mouth and into the stomach.

The muscles indeed closed apace 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 people are comm exclusively not conscious of it. Many people develop snarl their esophagus when they swallow something withal large, try to exhaust too quickly, or drink rattling hot or very cold liquids. They then feel the movement of the food or drink down the esophagus into the stomach, which may be an awkward feeling. Generally the esophagus is collapsed. It extends to a circular play only when a... If you want to get a full essay, lodge it on our website: Orderessay

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