The fundus is the dome-shaped upper part of the stomach that rises above the level of the cardial orifice and sits under the left dome of the diaphragm. In an upright person it usually contains a gas bubble that is visible on chest and abdominal X-rays. Its lining contains acid-secreting gastric glands like those of the body.
| Location | Upper part of the stomach above a horizontal line through the cardial orifice, under the left dome of the diaphragm and next to the spleen |
|---|---|
| Parts |
|
| Nerve Supply | Anterior and posterior vagal trunks (parasympathetic); Coeliac plexus, from greater splanchnic nerves T6-T9 (sympathetic) |
| Blood Supply | Short gastric arteries; Branches of the left gastric artery; Posterior gastric artery (when present) |
| Venous drainage |
|
| Lymphatic drainage |
|
Acts as a reservoir that relaxes to accept food without a rise in pressure, and secretes acid and pepsinogen.
In Nissen fundoplication the fundus is wrapped around the lower oesophagus to treat reflux. The short gastric veins drain the fundus into the splenic vein, so splenic vein thrombosis (often after pancreatitis) causes isolated fundal varices that can bleed. The fundus relaxes as food arrives (receptive relaxation), and loss of this vagal reflex after surgery causes early fullness.
Dilated veins in the fundus, often from splenic vein thrombosis, that can cause severe upper gastrointestinal bleeding.
Small, usually benign polyps in the fundus and body, commonly associated with long-term proton pump inhibitor use.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
