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Butterflies in the stomach is the physical sensation in humans of a "fluttery" feeling in the stomach, caused by a reduction of blood flow to the organ. This is as a result of the release of adrenaline and norepinephrine in the fight-or-flight response, which causes increased heart rate and blood pressure, consequently sending more blood to the muscles.
The stomach has a third layer: an innermost oblique layer. The physical contractions of the smooth muscle cells can be caused by action potentials in efferent motor neurons of the enteric nervous system, or by receptor mediated calcium influx. [1] These efferent motor neurons of the enteric nervous system are cholinergic and adrenergic neurons. [2]
The physical sensation of hunger is related to the contractions of the muscles of the empty stomach. Peristalsis takes place even when the stomach is empty, and these contractions—sometimes called hunger pangs once they become severe—are believed to be triggered by high concentrations of the ghrelin hormone.
Here, doctors detail common reasons why your stomach hurts. Abdominal pain covers a slew of issues including food poisoning, appendicitis, hernia, and more. Here, doctors detail common reasons why ...
Some of this will involve keeping track of your symptoms when seasonal allergies flare up, to pinpoint if an upset stomach is regularly occurring—either due to inflammation or in specific ...
Mucus is released in the stomach and intestine, and serves to lubricate and protect the inner mucosa of the tract. It is composed of a specific family of glycoproteins termed mucins and is generally very viscous. Mucus is made by two types of specialized cells termed mucous cells in the stomach and goblet cells in the intestines. Signals for ...
The acid and semi-digested fats in the duodenum trigger the enterogastric reflex – the duodenum sends inhibitory signals to the stomach by way of the enteric nervous system, and sends signals to the medulla that (1) inhibit the vagal nuclei, thus reducing vagal stimulation of the stomach, and (2) stimulate sympathetic neurons, which send ...
Although occasional stomach bloating is very common and usually resolves with simple changes to diet and lifestyle, it’s possible that it could be a sign of a more serious health issue.