Anatomy Of The Pancreas Animation: Relations, Neurovascular supply, Lymphatic drainage| USMLE Step 1

Introduction and Overview00:00:00

The pancreas is an elongated accessory digestive gland located on the posterior abdominal wall at the L1-L2 level, functioning as both an exocrine and endocrine gland.

Anatomical Structure and Relations00:01:25

The pancreas is divided into the head, neck, body, and tail. Each section has specific surface relations with nearby organs such as the duodenum, stomach, vena cava, and aorta.

Pancreatic Ductal System00:08:12

The pancreas utilizes the main pancreatic duct (Wirsung) and the accessory pancreatic duct to drain exocrine secretions into the duodenum, regulated by the sphincter of Oddi.

Neurovascular and Lymphatic Supply00:10:54

The organ is supplied by the splenic artery and pancreaticoduodenal arteries. Venous drainage goes to the portal vein, and innervation involves both the sympathetic and parasympathetic (vagus) systems.

Histology00:13:17

Histologically, the pancreas consists of exocrine acinar cells producing digestive enzymes and endocrine islets of Langerhans producing hormones like insulin and glucagon.

Embryological Development00:15:01

The pancreas develops from two buds: the dorsal bud forms the majority of the gland, while the ventral bud forms the uncinate process and part of the head.

Clinical Significance00:16:07

Clinical conditions discussed include pancreatitis, diabetes mellitus, annular pancreas, and the presence of accessory pancreatic tissue.