anatomy and physiology of gallbladder pdf

Anatomy and physiology of gallbladder pdf

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The Gallbladder

Quiz: The Liver and Gallbladder

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The gallbladder is a pear-shaped organ that stores about 50 ml of the bile produced by the liver until the body needs it for digestion. It is about 7—10cm long in humans and is dark green in color. The gallbladder has a muscular wall that contracts in response to cholecystokinin, a peptide hormone that is synthesized by the small intestine.

The Gallbladder

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The gallbladder is a pear-shaped, hollow structure located under the liver and on the right side of the abdomen. Its primary function is to store and concentrate bile, a yellow-brown digestive enzyme produced by the liver. The gallbladder is part of the biliary tract. When food enters the small intestine, a hormone called cholecystokinin is released, signaling the gallbladder to contract and secrete bile into the small intestine through the common bile duct. The bile helps the digestive process by breaking up fats. It also drains waste products from the liver into the duodenum, a part of the small intestine. An excess of cholesterol, bilirubin, or bile salts can cause gallstones to form.

The gallbladder is a gastrointestinal organ located within the right hypochondrial region of the abdomen. This intraperitoneal, pear-shaped sac lies within a fossa formed between the inferior aspects of the right and quadrate lobes of the liver. The primary function of the gallbladder is to concentrate and store bile which is produced by the liver. As part of the gustatory response, the stored bile is then released from the gallbladder in response to cholecystokinin. In this article, we shall look at the anatomy of the gallbladder — its structure, vasculature, innervation and lymphatic supply. The gallbladder is entirely surrounded by peritoneum , and is in direct relation to the visceral surface of the liver.

Quiz: The Liver and Gallbladder

Located in the upper right portion of the abdomen, the liver and gallbladder are interconnected by ducts known as the biliary tract , which drains into the first segment of the small intestine the duodenum. Although the liver and gallbladder participate in some of the same functions, they are very different. Liver cells produce bile, which flows into small channels called bile canaliculi. These small channels drain into bile ducts. The ducts join to form larger and larger channels and eventually form the left and right hepatic ducts, which join to form the common hepatic duct. The common hepatic duct joins with a duct connected to the gallbladder, called the cystic duct, to form the common bile duct. The common bile duct is joined by the pancreatic duct just before it enters the small intestine at the sphincter of Oddi.

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If your institution subscribes to this resource, and you don't have a MyAccess Profile, please contact your library's reference desk for information on how to gain access to this resource from off-campus. Please consult the latest official manual style if you have any questions regarding the format accuracy. Understand the role of the gallbladder in concentrating bile and coordinating its secretion with ingestion of a meal Describe the molecular mechanisms whereby bile is concentrated during storage Discuss the mechanism and significance of gallbladder secretion Understand how bile remains isoosmolar during concentration Explain how contraction of the gallbladder is regulated Explain why the gallbladder is vulnerable to the formation of cholesterol gallstones Describe the physiologic consequences of surgical removal of the gallbladder Understand the role of the sphincter of Oddi in regulating bile outflow into the intestine. The gallbladder serves to store and concentrate bile coming from the liver in the period between meals. Gallbladder function therefore permits coordination of the secretion of a bolus of concentrated bile with the entry of dietary lipids into the small intestine.

Chemical digestion in the small intestine relies on the activities of three accessory digestive organs: the liver, pancreas, and gallbladder Figure Figure numbers may need to be reordered as well, especially in the printed text. The digestive role of the liver is to produce bile and export it to the duodenum. The gallbladder primarily stores, concentrates, and releases bile. The pancreas produces pancreatic juice, which contains digestive enzymes and bicarbonate ions, and delivers it to the duodenum.

Gallbladder

Can hold 50 ml of bile. The Gallbladder is a small, pear-shaped organ in the abdomen.

Anatomy of the biliary system

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4 comments

  • Gocenorsso 16.11.2020 at 08:14

    gallbladder: In vertebrates, a small organ that aids mainly in fat digestion and concentrates bile produced by the liver. This is an anatomical drawing of the.

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  • Rachel T. 16.11.2020 at 09:50

    Gall bladder ANATOMY & PHYSIOLOGY. Introduction • In vertebrates the gallbladder (cholecyst, gall bladder or biliary vesicle) is a small.

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  • Rabican A. 16.11.2020 at 18:58

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  • Sforucacna 18.11.2020 at 19:02

    ANATOMY AND PHYSIOLOGY OF GALLBLADDER - Free download as Powerpoint Presentation .ppt), PDF File .pdf), Text File .txt) or view.

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