What is the fundus in the stomach?
Fundus: the upper part of the stomach next to the cardia. Body (corpus): the main part of the stomach, between the upper and lower parts.
What is vasovagal reflex in stomach?
The vagovagal reflex controls contraction of the gastrointestinal muscle layers in response to distension of the tract by food. This reflex also allows for the accommodation of large amounts of food in the gastrointestinal tracts. Vagovagal reflex. Control of stomach acid secretions.
What relaxes the fundus of the stomach?
Gastric dysfunction Gastric accommodation is a physiological phenomenon whereby the proximal stomach (fundus) relaxes to serve as a food reservoir in response to meal ingestion, which is controlled by a vagal reflex.
What is Fundic relaxation?
It consists of a reduction in gastric tone and an increase in compliance in response to food intake, allowing for an increased fundic volume without accompanying rise in intragastric pressure. 1. Under physiological conditions, this adaptive relaxation is not perceived.
What does the fundus do?
The fundus plays an important role, because it stores both undigested food and gases that are released during the process of chemical digestion. Food may sit in the fundus of the stomach for a while before being mixed with the chyme.
What is intragastric pressure?
The intragastric pressure at which the lower esophageal sphincter opens is also variable, with a mean of about 28 cm H2O, depending partly on the angle between the esophagus and the cardia of the stomach [240,241].
What is fundus of esophagus?
The gastric fundus contains a venous plexus that is normally drained by numerous short gastric veins anastomosing distally with the splenic vein and proximally with branches of the coronary vein as well as venous channels surrounding the distal esophagus.
What is fundus mucosa?
The mucosa of the gastric fundus contains a variety of cell types (e.g., parietal cells, which secrete hydrochloric acid and intrinsic factor, and chief cells, which secrete pepsinogen. The gastric antrum and pylorus contain G cells that secrete the hormone gastrin.