Gastrointestinal tract

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Which layer of the gastrointestinal system contains Meissner's submucosal nerve plexus?

Submucosa

Which layer of the gastrointestinal system contains Auerbach's myenteric nerve plexus?

Muscularis

What is the outermost layer of the gastrointestinal system called?

Serosa

Which layer of the GI tract consists of loose connective tissue, blood and lymphatic vessels, and sometimes glands?

<p>Submucosa</p> Signup and view all the answers

Which layer of the GI tract contains an inner circular layer and an outer longitudinal layer of smooth muscle?

<p>Muscularis</p> Signup and view all the answers

Which layer of the GI tract consists of loose connective tissue without mesothelium?

<p>Adventitia</p> Signup and view all the answers

Which layer of the GI tract covers most of the digestive tract and accessory glands in the abdominal cavity?

<p>Adventitia</p> Signup and view all the answers

Which region of the stomach has long pits and parietal cells?

<p>Fundus region</p> Signup and view all the answers

What is the function of the small intestine?

<p>Absorb final products of digestion</p> Signup and view all the answers

What are the anatomical regions of the small intestine, in order from proximal to distal?

<p>Duodenum, jejunum, ileum</p> Signup and view all the answers

Which type of cells in the small intestine produce mucus for protection?

<p>Goblet cells</p> Signup and view all the answers

What structures contribute to the large surface area of the small intestine?

<p>All of the above</p> Signup and view all the answers

Which cells in the small intestine produce lysozyme and defensins, which are antibacterial substances?

<p>Paneth cells</p> Signup and view all the answers

Which cells in the small intestine eat bugs/foreign stuff and present antigens to immune cells?

<p>M (microfold) cells</p> Signup and view all the answers

Which cells in the small intestine replenish the cells of the epithelium?

<p>Stem cells</p> Signup and view all the answers

Which layer of the large intestine is similar to the small intestine?

<p>Submucosa</p> Signup and view all the answers

Which layer of the colon is responsible for the formation of taenia coli?

<p>Muscularis externa</p> Signup and view all the answers

Which part of the large intestine has a histology similar to the colon but lacks taenia coli?

<p>Appendix</p> Signup and view all the answers

What type of epithelium is found in the rectum?

<p>Stratified squamous epithelium</p> Signup and view all the answers

Which layer of the GI tract contains the Auerbach's myenteric nerve plexus?

<p>Muscularis</p> Signup and view all the answers

What is the function of the Meissner's submucosal nerve plexus?

<p>Regulating GI motility</p> Signup and view all the answers

Which layer of the GI tract covers the digestive tract and accessory glands in the abdominal cavity?

<p>Serosa</p> Signup and view all the answers

Which cells in the stomach secrete pepsinogen, which is converted into pepsin by HCl?

<p>Chief cells</p> Signup and view all the answers

Which cells in the stomach make intrinsic factor, which is necessary for B12 absorption?

<p>Parietal cells</p> Signup and view all the answers

Which cells in the stomach release gastrin when there is protein in the stomach?

<p>Enteroendocrine cells</p> Signup and view all the answers

What is the total surface area of the small intestine?

<p>2700 square feet</p> Signup and view all the answers

Which layer of the gastrointestinal system contains the Meissner's submucosal nerve plexus?

<p>Submucosa</p> Signup and view all the answers

Which layer of the GI tract covers most of the digestive tract and accessory glands in the abdominal cavity?

<p>Adventitia</p> Signup and view all the answers

What are the anatomical regions of the small intestine, in order from proximal to distal?

<p>Duodenum, jejunum, ileum</p> Signup and view all the answers

Which part of the large intestine has a histology similar to the colon but lacks taenia coli?

<p>Cecum</p> Signup and view all the answers

Which layer of the gastrointestinal system contains the most lymphatic tissue?

<p>Submucosa</p> Signup and view all the answers

Which layer of the large intestine lacks taenia coli?

<p>Muscularis externa</p> Signup and view all the answers

What is the histology of the rectum?

<p>Stratified squamous epithelium</p> Signup and view all the answers

Which layer of the GI tract is responsible for the formation of the rectal columns of Morgagni?

<p>Muscularis mucosa</p> Signup and view all the answers

Which cells in the small intestine are responsible for producing lysozyme and defensins, which are antibacterial substances?

<p>Paneth cells</p> Signup and view all the answers

Which cells in the small intestine are responsible for eating bugs/foreign stuff and presenting antigens to immune cells?

<p>M (microfold) cells</p> Signup and view all the answers

Which cells in the small intestine are responsible for replenishing the cells of the epithelium?

<p>Stem cells</p> Signup and view all the answers

Which cells in the small intestine produce mucus for protection?

<p>Mucous goblet cells</p> Signup and view all the answers

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