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Lower Oesophagus

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The oesophagus is a muscular tube that connects the throat also known as the pharynx, with the stomach. The oesophagus is approximately 8cm in length and is lined with a pink tissue called mucosa. The oesophagus runs behind the windpipe (also known as the trachea) and the heart, the oesophagus runs in front of the spine. The oesophagus before entering the stomach goes through the diaphragm.
The upper oesophagus sphincter (UES) is a lot of muscles at the top of the oesophagus, where the oesophagus meets the stomach, these are under conscious control which is used when breathing, eating, belching, and vomiting. The muscles keep food and secretions from going the wrong way.
The lower oesophagus sphincter (LES) is a lot of muscles at the bottom
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