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Anatomy of Pancreas

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Page 1: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Anatomy of Pancreas

Page 2: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Objectives

Identify location of the Pancreas Recognize important anatomical relations

to the pancreas Identify different parts of the pancreas Recognize main and accessory pancreatic

ducts Identify blood supply of the pancreas Discuss lymphatic drainage, and nerve

supply of the pancreas

Page 3: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Pancreas

Pancreas is an elongated accessory digestive gland

It is a retro peritoneal organ that lies transversely crossing the bodies of L1-L2 vertebra “ trans pyloric plane”

It is both an endocrine and exocrine organ

Page 4: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Location: Retro-peritoneum, 2nd lumbar vertebral level

Has an oblique, transverse position Parts of pancreas: head, neck, body and

tail

Page 5: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Anatomical relations & Parts

Parts:BodyHead, Neck,TailUncinate process

Page 6: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Head of Pancreas

Includes uncinate process Flattened, 2 – 3 cm thick Right border: related to the 2nd and

3rd portions of duodenum Superior Pancreatico Duodenal

Artery(SPDA) and Inferior Pancreatico Duodenal Artery (IPDA) anastamose between the rt. lateral border & the duodenum

Page 7: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Neck of Pancreas 2.5 cm in length Straddles SMV and PV Superior border relates to the pylorus Superior mesenteric vessels emerge from

the inferior border Posteriorly, SMV and splenic vein

confluence to form portal vein Posteriorly, most often no branches to

pancreas

Page 8: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Parts of Pancreas

Page 9: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Body of Pancreas

Elongated, long structure Anterior surface, separated from

stomach by lesser sac Posterior surface, related to aorta,

Lt. adrenal gland, Lt. renal vessels and upper 1/3rd of Lt. kidney

Splenic vein runs embedded in the post. surface closer to the superior border

Inferior surface is covered by transverse mesocolon

Page 10: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Posterior relations

Page 11: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Tail of Pancreas

Narrow, short segment Lies at the level of the 12th thoracic

vertebra Ends within the splenic hilum Lies in the splenophrenic ligament Anteriorly, related to splenic flexure

of colon May be injured during splenectomy

(fistula)

Page 12: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Pancreatic Duct Main duct (Wirsung) runs the entire length of

pancreas Joins CBD at the ampulla of Vater

Page 13: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Arterial Supply of Pancreas

Variety of major arterial sources (Celiac, SMA and Splenic)

Celiac Common Hepatic Artery Gastroduodenal Artery Superior pancreaticoduodenal artery which divides into anterior and posterior branches

SMA Inferior pancreaticoduodenal artery which divides into anterior and posterior branches

Page 14: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Arterial Supply of Pancreas

Page 15: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Venous Drainage of Pancreas

Follows arterial supply Ultimately, into portal vein

Page 16: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Lymphatic Drainage

Rich periacinar network that drain into 5 nodal groups Superior nodes Anterior nodes Inferior nodes Posterior PD nodes Splenic nodes

Page 17: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Innervation of Pancreas

Sympathetic fibers from the splanchnic nerves

Parasympathetic fibers from the vagus

Page 18: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Innervation of Pancreas

Rich afferent sensory fiber network Ganglionectomy or celiac ganglion

blockade interrupt these somatic fibers (pancreatic pain)

However the origin of pancreatic pain is difficult to explain anatomically

Page 19: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Recommended readings

Keith L. Moore Clinically Oriented Anatomy Sixth edition pages 265-268

Page 20: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

Refeneces

Keith L. Moore Clinically Oriented Anatomy Sixth edition pages 265-268

www.medicalstudent.com www.netteranatomy.com http://www.bartleby.com/107/

http://www.medicalstudent.com/
http://www.netteranatomy.com/
http://www.bartleby.com/107/
Page 21: Anatomy of Pancreas. Identify location of the Pancreas Recognize important anatomical relations to the pancreas Identify different parts of the

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