Where is the duodenum located?

Asked By: Luanne Ditmar | Last Updated: 20th January, 2020
Category: medical health digestive disorders
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Located inferior to the stomach, the duodenum is a 10-12 inch (25-30 cm) long C-shaped, hollow tube. The duodenum is a part of the gastrointestinal (GI) tract, attached to the pyloric sphincter of the stomach on its superior end and to the jejunum of the small intestine on its inferior end.

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Beside this, where is the duodenum and what does it do?

Duodenum. The duodenum is the first part of the small intestine. It is located between the stomach and the middle part of the small intestine, or jejunum. After foods mix with stomach acid, they move into the duodenum, where they mix with bile from the gallbladder and digestive juices from the pancreas.

Additionally, is the duodenum part of the small intestine? The duodenum precedes the jejunum and ileum and is the shortest part of the small intestine. In humans, the duodenum is a hollow jointed tube about 25–38 cm (10–15 inches) long connecting the stomach to the jejunum.

Beside above, is the duodenum on the right or left?

The third (horizontal) part (7.5 cm) runs from right to left in front of the IVC and aorta, with the superior mesenteric vessels (the vein on the right and the artery on the left) in front of it. The fourth (ascending) part (2.5 cm) continues as the jejunum.

Can you live without a duodenum?

Most people can live without a stomach or large intestine, but it is harder to live without a small intestine. When all or most of the small intestine has to be removed or stops working, nutrients must be put directly into the blood stream (intravenous or IV) in liquid form.

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What does duodenum pain feel like?

Symptoms of gastric and duodenal ulcers are generally similar. The most common complaint is a burning pain in the stomach. Duodenal ulcers may also cause abdominal pain a few hours after eating. feeling full, even when the stomach is empty.

Why does my duodenum hurt?

The main cause of this damage is infection with bacteria called Helicobacter pylori, or H. pylori. The bacteria can cause the lining of your duodenum to become inflamed and an ulcer can form. Some medications can also cause a duodenal ulcer, particularly anti-inflammatory drugs such as ibuprofen and aspirin.

Is duodenum an organ?

The stomach is a J-shaped sac connecting the esophagus above and the small intestine below. The first part of the small intestine is known as the duodenum. Although it is a single organ, several different parts of the stomach exist: the fundus, body, antrum and pylorus.

What causes inflammation of the duodenum?

Duodenitis is inflammation occurring in the duodenum, the beginning of the small intestine. Severe illness and prolonged use of medications such as nonsteroidal anti-inflammatory drugs (NSAIDs), alcohol, or tobacco may also lead to duodenitis. Less commonly, Crohn's disease can cause duodenitis.

What does a healthy duodenum look like?


The duodenum is the shortest segment of the intestine and is about 23 to 28 cm (9 to 11 inches) long. It is roughly horseshoe-shaped, with the open end up and to the left, and it lies behind the liver.

How does the duodenum work?

The duodenum is the first part of the small intestine. The main role of the duodenum is to complete the first phase of digestion. In this section of the intestine, food from the stomach is mixed with enzymes from the pancreas and bile from the gallbladder. The enzymes and bile help break down food.

What two organs are connected to the duodenum?

Duodenum Location
It measures about 12 inches long, and is connected not only to the stomach and the jejunum – the second part of the small intestine – but to the gallbladder, liver, and pancreas as well, through an orifice known as the ampulla of Vater, which sits to the center of the duodenum.

Where is the ileum located?

The ileum is the third and final part of the small intestine. It follows the jejunum and ends at the ileocecal junction, where the terminal ileum communicates with the cecum of the large intestine through the ileocecal valve.

How can you tell the difference between duodenum jejunum and ileum?

The three sections of the small intestine look similar to each other at a microscopic level, but there are some important differences. The jejunum and ileum do not have Brunner's glands in the submucosa, while the ileum has Peyer's patches in the mucosa, but the duodenum and jejunum do not.

How long does it take to heal Duodenitis?


Duodenitis will usually heal with a six week course of acid suppression therapy using a proton pump inhibiting drug (Omeprazole, Esmoprazole etc) and eradication of Helicobacter Pylori (if present) with a week long course of two antibiotics in combination.

Where does the bile duct enter the duodenum?

The common bile duct passes through the pancreas before it empties into the first part of the small intestine (duodenum). The lower part of the common bile duct joins the pancreatic duct to form a channel called the ampulla of Vater or it may enter the duodenum directly.

Why is it called duodenum?

Duodenum - From its approximate length, this first part of the small intestine was called by the Greeks dodeka daktulon, meaning 12 fingers. It was translated into Arabic and ultimately emerged in Latin as duodenum in reference to its length. Ileum - comes from the Greek word eilos signifying twisted.

Where is the pylorus located in a human?

The pylorus is the furthest part of the stomach that connects to the duodenum. It is divided into two parts, the antrum, which connects to the body of the stomach, and the pyloric canal, which connects to the duodenum.

What does the duodenum absorb?


Iron is absorbed in the duodenum. Folate (Vitamin B9) is absorbed in the duodenum and jejunum. Vitamin B12 and bile salts are absorbed in the terminal ileum. Water is absorbed by osmosis and lipids by passive diffusion throughout the small intestine.

What is secreted into the duodenum?

Secretin is in the duodenum and signals the secretion of sodium bicarbonate in the pancreas and it stimulates the secretion of bile in the liver. Cholecystokinin (CCK) is in the duodenum and stimulates the release of digestive enzymes in the pancreas and the emptying of bile from the gall bladder.

What drains into the duodenum?

The common bile duct and the pancreatic duct unify to a conjoint duct at the hepatopancreatic ampulla (=ampulla of Vater) and empties into the descending part of the duodenum.