Pancreas Anatomy || Anatomy Where is the Pancreas

In The pancreas Anatomy, pancreas, lies behind the stomach on the posterior abdominal wall in the regio epigastrica, entering its left side into the left hypochondrium. Posteriorly adjacent to the inferior vena cava, left renal vein and aorta.

The pancreas is divided into the head, caput pancreatis, with the uncinate process, processus uncinatus, into the body, corpus pancreatis, and the tail, cauda pancreatis . The head of the gland is covered by the duodenum and is located at the level of the I and the upper part of the II lumbar vertebrae. On the border of it with the body there is a deep notch, incisura pancreatis (in the notch lie a. And v. Mesentericae superiores), and sometimes a narrowed part in the form of a neck. The body is prismatic and has three surfaces: front, back and bottom. The front surface, facies anterior, is concave and adjacent to the stomach; near the junction of the head with the body, a bulge towards the lesser omentum, called tuber omentale, is usually noticeable.

  • The posterior surface, facies posterior, faces the posterior abdominal wall.
  • The lower surface, facies inferior, faces downward and somewhat forward.

The three surfaces are separated from each other by three edges:

  • margo superior,
  • anterior and
  • inferior.

Along the top edge, on the right side, there is a. hepatica communis, and to the left along the edge stretches the splenic artery, heading to the spleen. The gland rises slightly from right to left, so that its tail lies higher than the head and approaches the lower part of the spleen. Pancreas does not have capsules, due to which its lobular structure is striking. The total length of the gland is 12-15 cm .

The peritoneum covers the anterior and inferior surfaces of the pancreas; its posterior surface is completely devoid of the peritoneum. The excretory duct of the pancreas, ductus pancreaticus , accepts numerous branches that flow into it almost at right angles; connecting with ductus choledochus , the duct opens with a common opening with the latter on papilla duodeni major .

This constructive relationship between ductus pancreaticus and duodenum , in addition to its functional significance (processing the contents of the duodeni with pancreas juice), is also due to the development of the pancreas from that part of the primary intestine from which the duodenum is formed. In addition to the main duct, there is almost always an additional one, ductus pancreaticus accessorius , which opens on papilla diodeni minor (about 2 cm above papilla duodeni major) . Sometimes there are cases of an accessory pancreas, pancreas accessdrium. There is also a ring-shaped pancreas, which causes compression of the duodenum.

The structure of the pancreas Anatomy. Blood supply, innervation, lymph outflow from the pancreas

By its structure, the pancreas belongs to the complex alveolar glands. It distinguishes two components: the main mass of the gland has an exocrine function, secreting its secret through the excretory ducts into the duodenum; a smaller part of the gland in the form of the so-called pancreas islets, insulae pancreaticae, belongs to endocrine formations, secreting insulin into the blood (insula – islet), which regulates blood sugar.

 

Blood supply, innervation, lymph outflow from the pancreas

The pancreas Anatomy is a mixed secretion gland that has multiple food sources: aa. pancreaticoduodenals superiores et inferiores, aa. lienalis and gastroepiploice sin. and others. Similar veins flow into v. portal and its tributaries.

Lymph flows to the nearest nodes: nodi lymphatici coeliaci, pancreatici, etc.

Innervation from the celiac plexus.

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