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Head & Neck Anatomy; Pharynx; Swallowing; nasophyarynx; oropharynx; laryngopharynx; posterior nares; choanae; uvula; epiglottis; Larynx; ; Greater Omentum; Lesser Omentum; Common Hepatic Bile Duct; Cystic Bile Duct; Common Bile Duct; professor fink
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Greys Anatomy Super Crazy Ultra Stick Duct Tape! Its even better than Gorilla Glue!
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The Small Intestine The small intestine, a twenty-one-foot tube, lies in coils in the abdomen. The first ten to twelve inches are called the duodenum, which is the U-shaped section of the small intestine that joins the stomach and the jejunum. The next eight feet, the jejunum and the remaining twelve feet the ileum, join the duodenum with the large intestine. The muscle layers of the small intestine are arranged longitudinally on the outside and circularly on the inside. Between the muscle layers are a series of nerve fibers which control the muscular movements that mix and move food along. The common bile duct is the opening through which bile and pancreatic juices enter the small intestine. As food reaches the duodenum from the stomach, it is mixed with these juices and further digested. At the base of the duct is a ring of smooth muscle, the sphincter, which regulates the outflow of fluid. Digested food is absorbed into the cells through the fingerlike projections lining the small intestine called the villi. The Crypts of Lieberkuhn, numerous tubular glands which open into the intestine from between the villi, secrete an alkaline fluid rich in digestive enzymes and mucus. The mucus protects the tissues of the small intestine from being digested by it's own enzymes. Brunner's glands pour out an alkaline juice to neutralize the acid chyme reaching the small intestine and to create the necessary conditions for further digestion. Tributaries of the portal vein carry ...
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The Pancreas The pancreas is shown here with the foreground highly magnified to reveal its inner anatomy. Ninety-nine percent of pancreatic tissue is composed of acinar glands, which secrete an alkaline digestive juice into the duodenum via the pancreatic duct to help digest food. The endocrine areas of the pancreas, known as the islets of Langerhans, are composed of two major types of cell. The alpha cells secrete the hormone glucagon, and the beta cells secrete insulin, into the bloodstream. These hormones work in opposition to control the blood glucose level. Insulin promotes the uptake and usage of glucose in the tissues, particularly skeletal muscle and fat, and reduces glucose production in the liver. Glucagon has an anti-insulin effect in the liver, increasing glucose release. The anatomy of the pancreas also includes: the ampulla of the common bile duct: the pancreatic duct, which carries digestive juice containing enzymes to the duodenum; the acini, the exocrine portions of the pancreas which secrete digestive juice into the pancreas; the splenic arteries which conduct oxygenated blood into the pancreas; and the mesenteric veins, which carry deoxygenated blood containing insulin and glucagon away from the pancreas.
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Module 1 -- Breast anatomy (Punjabi language) At puberty, the female breast develops into its final adult form. As well as becoming larger, the breast develops new internal structures called lobules. These structures are clustered together around a duct, and are where milk is produced after pregnancy. A group of lobules form a lobe, and each of these lobes is connected to the nipple by a duct. During pregnancy the milk ducts and lobules grow to provide milk, and after suckling stops they diminish. During menopause, the structures of the lobules and milk ducts change leaving a few scattered ducts in the breast. Cancerous changes can occur in the lobules and the milk ducts, leading to ductal and lobular cancers. Some cancers remain in the milk ducts and the lobules, and are called in situ, or noninvasive, cancers. But many become invasive, and spread to other parts of the breast and body. It is important to detect cancers early before they spread. This can often be done using a mammogram, which is a type of X-ray, and forms the basis of the NHS Breast Screening Programme.
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Liver, common bile duct which connects to pancreas, common hepatic duct, left hepatic duct, right hepatic duct
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This video was produced to help students of human anatomy at Modesto Junior College study our anatomical models.
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A controversy exists whether routine operative cholangiography is really necessary or not. The reality is that if don't have practice you cannot do it. And it is the difficult cholecystectomy when you are not entirely sure about the anatomy and when you would feel more confident if you could confirm the integrity of the biliary tree intra-operatively. Finding calculi in the CBD is not actually a purpose of the laparoscopic cholecystectomy for majority of us as many would rather investigate and obtain an ERCP preoperatively if choledocholithisis is suspected and do not have the equipment or motivation to proceed to a laparoscopic exploration of the bile duct if calculi are found incidentally at surgery. In the settings of a thickened gallbladder wall, dilated and oedematous cystic duct the endoclips may be too short or not strong enough to compress the tissues; this would make the cholangiogram difficult and could result in postoperative bile leak from the cystic duct stump. A PDS endoloop is an alternative in this situation. The video demonstrates an intra-operative cholangiogram performed with a Concord needle, when the cholangio-catheter is secured temporarily with a PDS endoloop and after the cholangiogram the cystic duct is closed with two PDS endoloops; the author performs routine intra-operative cholangiography and always uses a PDS endoloop on the cystic duct stump with no bile leak to present.