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GI Anatomy
Medical-Surgical Nursing
Question | Answer |
---|---|
What forms the common hepatic duct? | The left and right hepatics ducts |
How does bile leave the liver? | Through the common hepatic duct |
How long is the GI tract? | 30 feet (9 meters) |
What are the 4 layers of the GI tract? | (From inside out): Mucosa, submucosa, muscular, serosa |
What are the 2 networks of the enteric nervous system? | Meissner plexus and Auerbach (myenteric) plexus |
Which arteries supply the GI system? | Celiac, superior mesenteric, and inferior mesenteric |
How much cardiac output does the GI system receive when eating? | 35% |
What is the omentum? | A fold that hangs like an apron from the stomach to the intestine and contains fat and lymph nodes |
What is the main function of the GI system? | To supply nutrients to body cells |
Which hormone plays a role in appetite stimulation? | Ghrelin |
Which hormone is associated with appetite suppression? | Leptin |
What is deglutition? | Swallowing |
What is mastication? | Chewing |
What are the 3 parts of the pharynx? | Nasopharynx, oropharynx, and laryngopharynx |
What are the parts of the stomach? | Fundus. body, and pylorus |
What type of stomach cells secrete pepsinogen? | Chief cells |
What do the parietal cells of the stomach secrete? | |
What is the purpose of Brunner's glands in the submucosa of the small intestine? | They secrete an alkaline fluid containing bicarbonate |
What are the portions of the small intestine? | Duodenum, jejunum, and ileum |
What are the portions of the large intestine? | Cecum, colon, rectum, and anus |
What is the Valsalva maneuver associated with? | Defecation |
What enzyme does saliva contain? | Amylase |
Where does most absorption occur during the digestion? | Small intestine |
What is the functional unit of the liver? | Hepatic lobules |
What is the function of Kupffer cells? | To carry out phagocytosis in the liver |
Where are Kupffer cells located? | In the lining of sinusoids, which are specialized hepatic capillaries |
Where is bile secreted to from hepatic cells? | Canaliculi |
What does bile consist of? | Water, cholesterol, bile salts, electrolytes, and phospholipids |
What is bilirubin? | A pigment derived from the breakdown of Hgb |
What is the function of the gallbladder? | To concentrate and store bile |
What makes up the common bile duct? | Hepatic and cystic ducts |
Where does bile enter the small intestine? | Sphincter of Oddi/Ampulla of Vater (same thing, different names) |
Where do the pancreatic duct and common bile duct meet? | Sphincter of Oddi |
What is hypochlohydria? | Decrease in HCl acid production |
What is the order for the abdominal assessment? | Inspection, auscultation, percussion, and palpation |
What does borborygmi refer to? | Stomach growling |