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the enterogastric reflex is actaully a trio of reflexes that inhibit the vagal nuclei in the medulla, inhibit local reflexes and activate the sympathetic fibres that cause the pyloric sphincter to tighten and prevents further chyme entry into the small intestine.
What else can I help you with?
Which of the following is not a phase of gastric secretion?
enterogastric
What does enterogastric reflex accomplish?
Slows the emptying of the stomach contents
What does the enterogastric reflex accomplish?
the enterogastric reflex is actaully a trio of reflexes that inhibit the vagal nuclei in the medulla, inhibit local reflexes and activate the sympathetic fibres that cause the pyloric sphincter to tighten and prevents further chyme entry into the small intestine.
Phase of gastric regulation includes inhibition by the enterogastric reflex?
The phase you are referring to is the intestinal phase of gastric regulation. During this phase, the enterogastric reflex inhibits gastric activity in response to the presence of acidic chyme in the duodenum. This helps regulate the rate at which the stomach empties its contents into the small intestine.
What controls the rate of transfer of the contents of the stomach into the small intestine?
the search terms that I collected researching this: digestion "pyloric sphincter" valve "vagal nerve" gastrin "G cell" "enterogastric reflex" "Regulation of gastric emptying" ------- At the boundary between the stomach and the small intestine is a sphincter (muscular thickening of the intestinal walls) called the pylorus. Control of the tension of the pylorus is controlled by sympathetic flow from the celiac ganglia as well as parasympathetic and enteric plexus nerves. Generally distension of the stomach promotes a reduction of tension and relaxation of the pylorus while there is a retrograde negative feedback from the small intestine back the pylorus.
Is all the food you eat used in the body during digestion?
Before answering this question you should be aware of the meaning of food and different types of food.The body needs Proteins, Carbohydrates and fat in order to grow. But this can not function without the breaking of food i.e Digestion. Digestion helps the food to be broken down into simple particles so that can enter the body through the flow of blood.In mammals, food enters the mouth, being chewed by teeth, with chemical processing beginning with chemicals in the saliva from the salivary glands. Then it travels down the esophagus into the stomach, where acid both kills most contaminating microorganisms and begins mechanical break down of some food (e.g., denaturation of protein), and chemical alteration of some. After some time (typically an hour or two in humans, 4-6 hours in dogs, somewhat shorter duration in house cats, ...), the results go through the small intestine, through the large intestine, and are excreted during defecation.Human digestion processUpper and Lower human gastrointestinal tractThe whole digestive system is around 9 meters long. In a healthy human adult this process can take between 24 and 72 hours.Phases of gastric secretionCephalic phase - This phase occurs before food enters the stomach and involves preparation of the body for eating and digestion. Sight and thought stimulate the cerebral cortex. Taste and smell stimulus is sent to the hypothalamus and medulla oblongata. After this it is routed through the vagus nerve and release of acetylcholine. Gastric secretion at this phase rises to 40% of maximum rate. Acidity in the stomach is not buffered by food at this point and thus acts to inhibit parietal (secretes acid) and G cell (secretes gastrin) activity via D cell secretion of somatostatin.Gastric phase - This phase takes 3 to 4 hours. It is stimulated by distention of the stomach, presence of food in stomach and decrease in pH. Distention activates long and myentric reflexes. This activates the release of acetylcholine which stimulates the release of more gastric juices. As protein enters the stomach, it binds to hydrogen ions, which lowers the pH of the stomach to around pH 1-3. Inhibition of gastrin and HCl secretion is lifted. This triggers G cells to release gastrin, which in turn stimulates parietal cells to secrete HCl. HCl release is also triggered by acetylcholine and histamine.Intestinal phase - This phase has 2 parts, the excitatory and the inhibitory. Partially-digested food fills the duodenum. This triggers intestinal gastrin to be released. Enterogastric reflex inhibits vagal nuclei, activating sympathetic fibers causing the pyloric sphincter to tighten to prevent more food from entering, and inhibits local reflexes.There fore; All kinds of food must be digested.
What best describes the chewing food?
Chewing is the very first step in the process of digestion and the degree to which we chew our food well is important as it sets the stage for all the other processes of digestion and elimination. While we chew, saliva is added to the food we chew and the process of digestion has begun even before the bite of food travels to our stomach. Within the stomach digestion continues with acids acting upon the chunks of food we have swallowed. If the food in our stomach has not been chewed well enough the acids will do an incomplete job of breaking down the chunk. Soon enough the food in the tummy will be booted out and into the small intestine for continued digestive activity. Unfortunately, the small intestine has no idea how to handle these remaining large chunks and you may experience cramps and other complaints from deep within your gut. Listen to your Mother and chew your food well!
