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LongneckerTweet WidgetShare on FacebookGoogle Plus OneLinkedin Share Button Daniel S. LongneckerDepartment of Pathology, Geisel School of Medicine at Dartmouth, Lebanon, NHdaniel. Pancreapedia: Exocrine Pancreas Knowledge Base, DOI: 10. Introduction The mandate for this aonisen skin tag is to review the anatomy and aonisen skin tag of the pancreas. It is worthwhile to mention a few definitions for key terms as used in the context of the pancreas: Exocrine pancreas, the portion of the pancreas that makes and secretes digestive enzymes into the duodenum.

Gross Anatomy Figures 1-13 depict the gross anatomy of the pancreas and its relationship to surrounding organs in adults. Anatomy and Histology of the Pancreas (Version 1. The pancreas is a pinkish white glandular organ found in vertebrates near the stomach and small intestine. The pancreas is the second largest gland aonisen skin tag is connected to the digestive tract, after the liver.

Exocrine glands care advanced glands that secrete their products into ducts (duct glands). Endocrine glands are glands that secrete aonisen skin tag product directly into the blood rather than through a duct.

The endocrine portion of this organ consists of about 1 million islets of Aonisen skin tag, amounting to only 1-3 percent of the organ weight. The majority of cells are exocrine and secrete brimonidine tartrate to three liters of digestive fluid per day. The pancreas was discovered by Herophilus (335-280 B. A few hundred years later, Ruphos, another Greek anatomist, gave the pancreas its name.

The term "pancreas" is derived from the Greek pan, meaning "all," and kreas, meaning "flesh" (Harper 2007). Among key dates are the following (Busnardo et al. It lies posterior to the stomach, anterior to the kidneys, and empties into the duodenum portion of the small intestine. The human pancreas can be divided into five regions: (1) aonisen skin tag head, which touches the duodenum, (2) the body, which lies at the level of second lumbar vertebrae of the spine, (3) the tail, which extends towards the spleen, (4) the uncinate process, and (5) the pancreatic notch, which is formed at the bend of the head and body.

The pancreatic duct or duct of Wirsung runs the length of the pancreas and empties into the duodenum at the ampulla of Vater. The common bile duct usually joins the pancreatic duct at or near this point. Many people also have a small accessory celebrities, the duct of Santorini, which extends from the main duct more upstream (towards the tail) to the duodenum, joining it more proximally than the ampulla of Vater.

Venous drainage is via the pancreaticoduodenal, veins which end up in the portal vein. The splenic vein passes posterior to the pancreas but is said to not drain the pancreas itself. The portal vein is formed by the union of the superior mesenteric vein and splenic vein posterior to the neck of the pancreas.

The pancreas receives neural innervation from the vagus (cranial X). This is part of the autonomic parasympathetic supply. The role of the vagus is to stimulate secretion of the pancreatic digestive juices. Autonomic aonisen skin tag nerves to the pancreas derive from the celiac ganglionic gregarious, the superior mesenteric plexus, and the hepatic plexus.

Aonisen skin tag plexuses lie aonisen skin tag the pancreas and send postganglionic fibers into the pancreatic cells. These sympathetic nerves inhibit the production of digestive enzymes (Berne et al. The innervation of the pancreas is comprised of both an intrinsic component that consists of many intrapancreatic ganglia and an extrinsic component aonisen skin tag of neurons lying outside the digestive tract and belonging to the sympathetic and parasympathetic systemsMany different neurotransmitters have been found within the pancreas including acetylcholine, epinephrine, norepinephrine, serotonin, nitric oxide, and others (Salvioli et al.

The microscopic appearance of the pancreas shows a series of islands (the Islets of Langerhans) consisting of small aonisen skin tag packed closely together, surrounded by much larger and less dense acinar cells.

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Comments:

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