Abdomen: want to learn more about it?
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Kim Bengochea, Regis University, Denver
Abdomen
Abdominal wall
The structures of the abdominal wall support and maintain the anatomical position of the organs within as well as protect them from injury.
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Regions of the abdomenBorders and contents of the abdominal regions.
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Muscles of the abdominal wallMain muscles found in the abdominal wall.
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Neurovasculature of abdominal wallIntroduction to the nerves and vessels of the abdominal wall
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Inguinal canalStructure of the inguinal canal and femoral sheath.
Peritoneal cavity
The peritoneal cavity is a space between the parietal and visceral peritoneum, which are the two membranes that separate the organs from the abdominal wall.
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Greater omentumIntroduction to the greater omentum.
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MesenteryOverview of the mesentery.
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Peritoneal relationsPeritoneal cavity as seen in a parasagittal section.
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Omental bursaIntroduction to the omental bursa.
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RetroperitoneumIntroduction to the retroperitoneum.
Stomach
The stomach is an organ found in the upper abdomen and is part of the gastrointestinal tract. The main function of this organ is to produce digestive enzymes.
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Stomach in situAnterior view of the stomach in situ, with the liver retracted.
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Musculature and mucosa of the stomachOverview of the muscular layers and mucosa of the stomach.
Spleen
The spleen is found in the upper left part of the abdomen. Its main functions include filtering your blood, creating new blood cells and store platelets.
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Structure of the spleenStructure, neurovasculature and function of the spleen.
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Spleen microcirculationStructure and organization of spleen microcirculation.
Liver
The liver is a large essential organ found in the upper right quadrant of the abdomen. It is a multifunctional unit that performs such duties as detoxification.
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Liver in situAnterior view of a retracted liver in situ.
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Anterior view of the liverStructures seen on the anterior view of the isolated liver.
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Inferior view of the liverStructures seen on the inferior view of the isolated liver.
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Posterior view of the liverStructures seen on the posterior view of the isolated liver.
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GallbladderAnatomy and function of the gallbladder.
Pancreas
The pancreas is an accessory organ of the GI tract whose function is to release substances that help regulate the blood sugar levels as well as digestion.
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Pancreas in situPancreas in situ seen from the anterior view.
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Pancreatic duct systemThe pancreatic ducts carry digestive enzymes to the duodenum.
Small intestine
The small intestine is the part of the GI tract between the stomach and large intestine. This structure is divided into 3 parts: duodenum, jejunum and ileum.
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DuodenumStructure of the duodenum, including layers of the wall of duodenum and its anatomical relations.
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Arteries of the small intestineArteries of the small intestine with a focus on the superior mesenteric artery.
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Veins of the small intestineVeins that drain the small intestine.
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Innervation of the small intestineNerves of the small intestine seen from an anterior view of the abdomen.
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Lymph nodes of the small intestineLymph nodes and vessels of the small intestine and neighbouring structures.
Large intestine
The large intestine is the last part of the GI tract. It functions to absorb water from fecal matter and helps the body get rid of the remaining waste material.
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Large intestineStructure of the large intestine, including the mucosa and musculature.
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Rectum and anal canalStructures of the rectum and anal canal as seen in coronal section.
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Arteries of the large intestineArteries of the large intestine seen from an anterior view.
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Blood vessels of the rectumArteries and veins of the rectum.
Kidneys and ureters
The kidneys are a pair of organs shaped like beans and located in the back of the abdomen. The main function of those organs is to filter your blood.
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Overview of the kidneyAnterior view of the kidney and related structures.
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Kidneys in situKidneys in situ seen from the anterior view.
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Kidney structureInternal structure of the kidney as seen in coronal section.
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Renal arteriesArteries of the kidneys seen on the anterior view of the right kidney.
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Ureters in situAbdominal and pelvic parts of the ureters and related structures.
Nerves, vessels and lymphatics of the abdomen
The abdomen is vascularised and innervated by an extensive network of blood vessels, lymphatics and nerves.
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Lumbar plexusThe lumbar plexus supplies the abdominal wall, pelvis and lower limb.
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Arteries of the stomach, liver and spleenArteries supplying the stomach, liver and spleen.
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Arteries of the pancreas, duodenum and spleenArteries supplying the pancreas, duodenum and spleen.
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Hepatic portal veinHepatic portal vein and surrounding vasculature.
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Lymphatics of the pancreas, duodenum and spleenLymph nodes and vessels of the pancreas, spleen and duodenum.
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Lymphatics of the stomach and liverLymph nodes and vessels of the stomach and liver.
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Lymphatics of the posterior abdominal wallLymph nodes and vessels of the posterior abdominal wall.