University:
Texas A&M University
Course:
BIOL 111 | Introductory Biology I
Academic year:

2024
Views:

255

Pages:

30
Author:

hekeldigzjbz

Laboratory exercises for abdominal organs Pancreas, dog. pancreatic islets CENTROACINAR CELLS ARE THE BEGINNING CELLS OF THE INTERCALATED DUCTS THAT DRAIN THE SECRETORY ACINI OF THE PANCREAS. THEY SECRETE BICARBONATE serous acini INTERCALATED DUCTS Bile Canaliculi Bile luminal surfaces Bile ducts Blood luminal surface Pancreas, dog. INTERCALATED DUCTS pancreatic islets Pancreas has Islets and centroacinar cells, but no striated ducts Compared to the salivary glans The salivary gland has striated ducts, but no Islets and centroacinar cells Striations in base of duct cells Salivary gland Pancreas, goat. CENTROACINAR CELLS are the beginning of the intercalated duct that originated within the lumen of the ancina pancreatic islets INTERCALATED DUCTS Small intestine (duodenum) and pancreas, dog. (157) CENTROACINAR CELLS pancreatic islet Pancreas and duodenum, cat. Pancreas duodenum Dispersed pancreatic islet cells CENTROACINAR CELLS Liver Portal radicles containing: A bile duct Branch of portal vein, Branch of hepatic artery Lymphatic vessel (usually) or portal canals 155 Cords of hepatocytes Liver Bile Canaliculi Bile luminal surfaces Bile duct Blood luminal surface Liver, pig. hepatic lobules hepatocytes Sinusoids discontinuous Liver, pig. Hepatic sinusoids flow between rows of hepatocytes toward the central vein. venule which is a branch of the portal vein hepatic lobule capsule portal triad. arteriole, which is a branch of the hepatic artery either simple cuboidal or simple columnar epithelium Of bile duct. interlobular connective tissue are larger veins, not accompanied by an artery and a duct, named sublobular veins Liver, Pig. hepatic lobule portal triad. venule bile duct artery Central vein Liver, horse. Hepatic sinusoids flow between rows of hepatocytes toward the central vein. Space of Disse portal triad. HEPATOCYTE SPACE OF DISSE BILE CANALICULI Liver & gall bladder, pig. Kupffer cells Mesothelium of capsule central vein portal triad. capsule Sinusoids discontinuous Liver & gall bladder, pig. Mesothelium of capsule Kupffer cells portal triad. Kupffer cells (i.e. the liver macrophages lining the sinusoids) are noticeable because they ingested black Kupffer cells Liver & gall bladder, pig. Microvilli occur apically but are difficult to see gallbladder No muscularis mucosae occurs so the lamina propria blends with the submucosa. Note the tunica muscularis is not well organized. The thick layer of CCT outside the tunica muscularis is called the “perimuscular connective tissue” layer. Liver & gall bladder, pig. gallbladder Liver, monkey Central vein Kupffer cells Liver, goat Liver and gallbladder, sheep. Liver and gallbladder, sheep. Gallbladder The mucosa is thrown into folds which project into the lumen of the gallbladder. Smooth muscle layer or branching layers Lamina propria. A thick perimuscular layer of connective tissue. Simple columnar epithelium Peritoneal serosal layer The gallbladder stores and concentrates the bile Plasma cells 155 Mucosa by the liver elaborated In the lamina propria Simple columnar epithelium Bile duct with portal vein, monkey Portal vein Cystic duct Common hepatic duct The wall of the cystic duct is convoluted and contains abundant smooth muscle fibers which represent the spiral valve preventing distention or collapse of the cystic duct when the latter is subject to sudden changes of pressure. Liver, rabbit. Liver and gallbladder, dog.