Defecation is the elimination of feces through the anus (a sphincter). Stretching of the rectum causes a nervous reflex. Stretch receptors send signal to lower spinal cord which relay signal to relax anus and cause peristalsis of the rectal wall.
- 1 What describes the Enterogastric reflex?
- 2 What is GI reflex?
- 3 What is the Enterogastric reflex quizlet?
- 4 What reflex causes an increase in small intestine activity when the stomach is stimulated by stretching the presence of food or cephalic stimulation?
- 5 What is the Duodenocolic reflex?
- 6 Is Enterogastric reflex parasympathetic or sympathetic?
- 7 What causes the gastrocolic reflex?
- 8 What do the Gastroenteric reflex and the gastroileal reflex?
- 9 Why does gastrocolic reflex occur?
- 10 Which of the following stimulates the Enterogastric reflex?
- 11 What is the main job of the pharynx quizlet?
- 12 What is the myenteric plexus quizlet?
- 13 How stretching of stomach affects the stomach secretory activity?
- 14 Which reflex is stimulated by stretch receptors in the stomach to increase motility and secretions along the small intestines group of answer choices?
- 15 What is a gastrointestinal reflex pathway?
What describes the Enterogastric reflex?
enterogastric reflex A nervous reflex whereby stretching of the wall of the duodenum results in inhibition of gastric motility and reduced rate of emptying of the stomach. It is a feedback mechanism to regulate the rate at which partially digested food (chyme) leaves the stomach and enters the small intestine.
What is GI reflex?
Gastrointestinal reflexes are those reflexes that are involved in regulating the functions of the esophagus, stomach, small intestine, large intestine, intestinal sphincters, pancreas and biliary system.
What is the Enterogastric reflex quizlet?
Enterogastric Reflex: is triggered by baroreceptors (arrival of chyme stretches the receptors) and chemoreceptors (pH change in the arrival of chyme) in the duodenum. The results are temporarily inhibit gastrin production, decrease stomach contractions, and increase the contraction of the pyloric sphincter.
What reflex causes an increase in small intestine activity when the stomach is stimulated by stretching the presence of food or cephalic stimulation?
The gastrocolic reflex is the physiological reflex that controls the motility, or peristalsis, of the gastrointestinal tract. It involves an increase in motility of the colon in response to stretch in the stomach and the byproducts of digestion in the small intestine.
What is the Duodenocolic reflex?
Duodenocolic reflex is triggered by a high tension in the duodenal wall. Signal spreads through the myenteric plexus to the colon and increases the frequency of action potentials in the smooth muscle cells. That increases speed of the propulsion movements.
Is Enterogastric reflex parasympathetic or sympathetic?
They send signals via the parasympathetic nervous system, causing reflex inhibition of stomach-wall muscles responsible for the stomach emptying.
What causes the gastrocolic reflex?
The gastrocolic reflex, or gastrocolic response, is a normal involuntary reaction to food entering the stomach. When food enters this organ, the body releases a hormone that causes the colon to contract.
What do the Gastroenteric reflex and the gastroileal reflex?
What do the gastroenteric reflex and the gastroileal reflex have in common? They both respond to signals associated with the distension of the stomach wall. They both affect the rate at which chyme enters the small intestine through the ileocecal valve. They are both triggered during the gastric phase of regulation.
Why does gastrocolic reflex occur?
Gastrocolic reflex isn’t a condition or disease, but rather one of your body’s natural reflexes. It signals your colon to empty food once it gets to your stomach in order to make room for more food. However, for some people that reflex goes into overdrive, sending them running to the restroom right after eating.
Which of the following stimulates the Enterogastric reflex?
The enterogastric reflex is stimulated by duodenal distension. It can also be stimulated by a pH of 3-4 in the duodenum and by a pH of 1.5 in the stomach. Upon initiation of the reflex, the release of gastrin by G-cells in the antrum of the stomach is shut off.
What is the main job of the pharynx quizlet?
The main function of the pharynx is to provide a passageway for the respiratory and digestive tracts. The pharynx is also referred to as the throat. The esophagus seems to have only one important function in the body – to carry food, liquids, and saliva from the mouth to the stomach. You just studied 33 terms!
What is the myenteric plexus quizlet?
The myenteric plexus lies between the circular muscle and the longtidutional muscle. Preganglionic fibers of the sympathetic nervous system are relatively short and synapse in ganglia outside the GI tract.
How stretching of stomach affects the stomach secretory activity?
The stretching of the duodenum accentuates vagal reflexes that stimulate the stomach, and peptides and amino acids in the chyme stimulate the G cells of the duodenum to secrete more gastrin, which further stimulates the stomach.
Which reflex is stimulated by stretch receptors in the stomach to increase motility and secretions along the small intestines group of answer choices?
As a result of the gastrocolic reflex, the colon has increased motility in response to the stretch of the stomach with the ingestion of food. The gastrocolic reflex allows room for the consumption of more food via control over peristalsis and movement of ingested food distally toward the rectum.
What is a gastrointestinal reflex pathway?
The gastroileal reflex works with the gastrocolic reflex to stimulate the urge to defecate. It does so by opening the ileocecal valve and moving the digested contents from the ileum of the small intestine into the colon for compaction.