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The body and neck of the pancreas drain into the splenic vein, which sits behind the pancreas. [7] The head drains into, and wraps around, the superior mesenteric and portal veins, via the pancreaticoduodenal veins. [7] The pancreas drains into lymphatic vessels that travel alongside its arteries, and has a rich lymphatic supply. [7]
The pancreas arises as two separate bodies, the dorsal pancreas and the ventral pancreas. The dorsal pancreas appears first, at around day 26, opposite the developing hepatic duct, and grows into the dorsal mesentery. The ventral pancreas develops at the junction of the hepatic duct and the rest of the foregut.
The duodenum receives excretions from various organs such as the pancreas and spleen. The pancreas produces the hormone insulin, which helps regulate blood sugar. [4] [5] The second part is the jejunum, which is located in the middle of the small intestine. The final part of the small intestine is the ileum, which leads into the large intestine.
The trunk of the body contains, from superior to inferior, the thoracic region encompassing the chest [1] the mammary region encompassing each breast; the sternal region encompassing the sternum; the abdominal region encompassing the stomach area; the umbilical region is located around the navel; the coxal region encompassing the lateral (side ...
There are about 1 million islets distributed throughout the pancreas of a healthy adult human. While islets vary in size, the average diameter is about 0.2 mm. [5]:928 Each islet is separated from the surrounding pancreatic tissue by a thin, fibrous, connective tissue capsule which is continuous with the fibrous connective tissue that is interwoven throughout the rest of the pancreas.
The pancreatic duct is generally regarded as abnormally enlarged if being over 3 mm in the head and 2 mm in the body or tail on CT scan. [9] Pancreatic duct or parts of pancreatic duct can be demonstrated on ultrasound in 75 to 85% of people. [10] Pancreatic ductal carcinoma is a common form of pancreatic cancer.
Pancreatitis is a condition characterized by inflammation of the pancreas. [1] The pancreas is a large organ behind the stomach that produces digestive enzymes and a number of hormones. [1] There are two main types: acute pancreatitis, and chronic pancreatitis. [1] Signs and symptoms of pancreatitis include pain in the upper abdomen, nausea and ...
The pancreas is controlled by both the sympathetic nervous system and the parasympathetic nervous system, although the method these two systems use to control the pancreas appears to be different. [8] Sympathetic control of the pancreas appears to originate from the sympathetic preganglionic fibers in the lower thoracic and lumbar spinal cord. [9]