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Diagram showing parts of the stomach. The human stomach can be divided into four sections, beginning at the cardia followed by the fundus, the body and the pylorus. [8] [9] The gastric cardia is where the contents of the esophagus empty from the gastroesophageal sphincter into the cardiac orifice, the opening into the gastric cardia.
The stomach is a distensible organ and can normally expand to hold about one litre of food. [22] This expansion is enabled by a series of gastric folds in the inner walls of the stomach. The stomach of a newborn baby will only be able to expand to retain about 30 ml.
What you'll notice about a lot of the emotions that people feel in their stomach ( butterflies, the gutwrench, the knot) is that they're all different ways of experiencing the same emotion: stress.
The function of the GI tract is to process ingested food by mechanical and chemical means, extract nutrients and excrete waste products. The GI tract is composed of the alimentary canal, that runs from the mouth to the anus, as well as the associated glands, chemicals, hormones, and enzymes that assist in digestion.
This allows the stomach to expand, therefore increasing the volume of the stomach without increasing pressure. [2] They also provide the stomach with an increased surface area for nutrient absorption during digestion. [2] Gastric folds may be seen during esophagogastroduodenoscopy or in radiological studies. [3] [4]
Added label for pylorus. Note that inkscape shows labels for the greater and lesser curvature that are not rendered in png. 17:01, 11 September 2010: 105 × 81 (17 KB) Mcstrother {{Information |Description=Diagram of basic surface anatomy and regions of the stomach. Drawn in Inkscape. Based on diagram from Moore, K.L., & Agur, A.M. (2007).
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This theory states that the vagus nerve provides a direct link between the brain and the gut so that emotions can affect stomach rhythms and vice versa. [ 12 ] [ 13 ] This idea originated in the mid-1800s when Alexis St. Martin , a man with a gunshot-induced fistula in his abdomen, experienced lower secretions of digestive juices and a slower ...