Pancreas Anatomy and Functions|check overview location,structure,ducts, blood and nerve supply

Pancreas:

The pancreas is both an exocrine and endocrine gland. It is the elongated structure.It is one of the accessory organ of the gastrointestinal system.

Location:

it is situated behind the stomach and peritoneum, lies on posterior abdominal wall.Its right side is in contact with small intestine and left side with the hilum of spleen.
Parts of pancreas:
Pancreas is divided into four parts:
Head:
It lies in the concavity of  C-shaped duodenum and it is disc shaped and is the widest part of pancreas
Tail:
The tail is the last part and extends to the hilum of spleen.
Neck:
Neck connects the head to the body,it is next to head,narrow and lies in front of the beginning of the portal vein
Body
The body passes upward and to the left across the midline, it connects neck to the tail.
  Uncinate process-the projection from the lower part of the head behind the superior mesenteric vessels.

Exocrine function of Pancreas-the portion of the pancreas that makes and secretes digestive enzymes into the duodenum. This includes acinar and duct cells with associated connective tissue, vessels, and nerves. The exocrine components comprise more than 95% of the pancreatic mass.
Endocrine function of pancreas- the portions of the pancreas (the islets) that make and secrete insulin, glucagon, somatostatin and pancreatic polypeptide into the blood. Islets comprise 1-2% of pancreatic mass. It regulates blood sugur.

Duct system

Main pancreatic duct along with bile duct opens into second part of major duodenal papilla of duodenum.
The accessory duct drains the upper part of duodenum on the minor duodenal papilla.

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Blood supply

Artrial supply

• splenic artery
• inferior pancreaticoduodenal arteries

Venous supply
Pancreatic veins drains into portal vein.
Nerve supply
Both sympathetic and parasympathetic fibers from celiac plexus supply the pancreas.