Duodenum

The information brought back here have only an illustrative aim: not they are riferibili neither to prescription neither to medical councils -

duodenum it is a part oftenuous intestine.

Human anatomy

The duodenum is along 25-30 cm approximately and it is introduced like a incurvato tube to ring, that large part embraces one of ("head of the pancreas"). It constitutes the first feature of the tenuous intestine, follows pilorica valve of and it is continued in fast, forming one curving (angle duodenum-digiunale).
It can be subdivided in portions:

• advanced, leggermente expanded (duodenal bulb)
• descendant, than fold towards the bottom remaining to right of vertebral column
• horizontal, that it turns on the left, intercrossing the vertebral column
• ascending, going back along the left side of the vertebral column.

It is situated deeply between the epigastrica and mesogastrica zone. In its first feature, the duodenum is covered from liver, contracting relationships with gall bladder. In the features succeeded to you it has relationships with , large epiploon, colon devious, coledoco, vein quarry,aorta descendant, and with a feature of the ascending colon.

Vascolarizzazione and innervation

The vascolarizzazione of the duodenum is entrusted toskillful gastro-epiploica artery and toadvanced mesenterica artery.
It is gone linfati to us pay in reservior of Pecquet.
The nervous system is irradiated in the solar, mienterico and sottoperitoneale duodenum through the plesso. From the disposition of peritoneum numerous legamenti are born, like the duodenum-renal one, the duodenum-cistico, the duodenum-hepatic one, etc.

Structure

It is covered from a thin sierosa membrane that joins it to the posterior wall of the abdomen.
To the beginning of the duodenum pliche conniventi are present of the semicircular pliche () that they increase the internal surface, favoring .
In the portion descendant of the duodenum two said reliefs are found papillae, greater and minor. In the greater one it is dugampoule of Vater, in which it has outlet lead coledoco and greater the pancreatico culvert (Lead of Wirsung). In the smaller papilla the smaller pancreatico scholar ends up.
These channels riversano in the duodenum respective bile and pancreatico juice, that they come uses you in internal the digestive process.
In correspondence of the duodenum, they are present also glands of Brunner, of composed tubular type. Giacciono in the sottomucosa and is constituted from cells of only type to mucoide secretion.

Pathology

The duodenum is subject to, that it can regard all the features of the same one.
Other pathologies are tied to traumatic effects us, to the extraction of bodies strangers, the acute occlusions or the stenoses, in order to end with the position anomalies.

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