Why is it called the duodenum?
Why is it called the duodenum?
Positioned inferiorly to the stomach, the duodenum is approximately 25 to 30 cm long. Interestingly enough, this portion of the small intestine got its name due to its length. In Latin, the term “duodenum” means 12 fingers, which is roughly the length of the duodenum.
What is duodenum also known as?
The most proximal portion of the small intestine is the duodenum. Its name is derived from the Latin ‘duodenum digitorum’, meaning twelve fingers length. It runs from the pylorus of the stomach to the duodenojejunal junction. The duodenum can be divided into four parts: superior, descending, inferior and ascending.
What is unique about the duodenum?
A characteristic feature of the duodenum is the Brunner’s glands embedded in the submucosa. These produce – amongst others – mucous secret containing bicarbonate which serves to neutralize the gastric acid. Furthermore crypts of Lieberkuhn lie between the villi. Paneth cells are found in the lumen of these crypts.
Why is the duodenum important?
The duodenum produces hormones and receives secretions from the liver (bile) and pancreas (pancreatic juice containing digestive enzymes). These various hormones, fluids and enzymes facilitate chemical digestion in the duodenum while also ensuring the acidity of chyme coming from the stomach is neutralised.
Where is the duodenum located in the small intestine?
Distally, duodenum is in continuation with the jejunum and ileum, with the proximal segment being the shortest and widest. Positioned inferiorly to the stomach, the duodenum is approximately 25 to 30 cm long. Interestingly enough, this portion of the small intestine got its name due to its length.
Where does the duplication of the duodenum occur?
While duplications are rare in the gastrointestinal tract, approximately 12% occur in the gastroduodenal region. Duodenal duplication arises most often in the medial wall of the second and third portions of the duodenum and typically appears as a well-circumscribed cystic mass with fluid attenuation (, 7,, 8 ).
How are the four segments of the duodenum connected?
Segments of the Duodenum The four segments of the duodenum include: 1 The first segment of the duodenum —the superior part of the duodenum (called the duodenal bulb) is connected to the liver via the hepatoduodenal ligament.
Are there any infectious diseases of the duodenum?
Infectious diseases of the duodenum are difficult to diagnose, as the findings are not specific. While small bowel malignancies are relatively rare, lipoma, adenoma, and adenocarcinoma, as well as local extension from adjacent malignancies, can be diagnosed at CT.
Where does the name duodenum come from in Greek?
Coined by Gerard of Cremona (d. 1187) in “Canon Avicennae,” a loan-translation of Greek dodekadaktylon, literally “twelve fingers long.”. The intestine part was so called by Greek physician Herophilus (c. 353-280 B.C.E.) for its length, which is about equal to the breadth of twelve fingers. The classical plural is duodena.
Is the duodenum part of the small intestine?
The small intestine is divided up into three sections. The first part of the small intestine is the duodenum, next the jejunum, and finally the ileum. The duodenum is shaped like the letter C. The small section at the top is called the cap and connects to the pylorus (opening of the stomach) and the liver.
Where does the duodenum pass the chyme to?
The duodenum then passes the chyme into the jejunum – the next part of the small intestine, but not before absorbing iron and a few other vitamins from the processed chyme. The duodenum’s location is just beneath the stomach, and sits to the right of the body.
How is the superior part of the duodenum connected to the liver?
Overview of the duodenum – anterior view The superior part lies intraperitoneally and is enlarged proximally (duodenal bulb). It is connected to the liver by the hepatoduodenal ligament. The descending part and the rest of the duodenum lie retroperitoneally.