Podcast
Questions and Answers
What is the characteristic feature of the epithelium in the stomach?
What is the characteristic feature of the epithelium in the stomach?
- Gastric pits (correct)
- Rugae
- Haustra
- Plicae circulares
Which of the following is NOT associated with the small intestine?
Which of the following is NOT associated with the small intestine?
- Crypts of Lieberkuhn
- Villi
- Plicae circulares
- Haustra (correct)
What is the name of the folds in the epithelium of the esophagus?
What is the name of the folds in the epithelium of the esophagus?
- None (correct)
- Rugae
- Plicae circulares
- Villi
Which of the following is associated with the large intestine?
Which of the following is associated with the large intestine?
What is the name of the folds in the epithelium of the stomach?
What is the name of the folds in the epithelium of the stomach?
What type of epithelium is present in the lining epithelium of the mucosa?
What type of epithelium is present in the lining epithelium of the mucosa?
Which of the following layers of the mucosa sits on a basement membrane?
Which of the following layers of the mucosa sits on a basement membrane?
What is the composition of the lamina propria in the mucosa?
What is the composition of the lamina propria in the mucosa?
What is the term for the mucosa?
What is the term for the mucosa?
How many sub-layers does the mucosa have?
How many sub-layers does the mucosa have?
Which part of the gastrointestinal tract lacks specialized structures in the submucosa?
Which part of the gastrointestinal tract lacks specialized structures in the submucosa?
What type of glands are found in the submucosa of the duodenum?
What type of glands are found in the submucosa of the duodenum?
What are the specialized structures found in the submucosa of the esophagus?
What are the specialized structures found in the submucosa of the esophagus?
What type of glands are absent in the submucosa of the large intestine?
What type of glands are absent in the submucosa of the large intestine?
Which part of the gastrointestinal tract contains Peyer's Patches in the submucosa?
Which part of the gastrointestinal tract contains Peyer's Patches in the submucosa?
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Study Notes
Mucosa
- Composed of three sub-layers: lining epithelium, lamina propria, and muscularis mucosae
- Lining epithelium: made of simple columnar epithelium or stratified squamous non-keratinized epithelium, sits on a basement membrane
- Lamina propria: loose connective tissue
Organ Folds of the Epithelium
- Esophagus: none
- Stomach: rugae (large folds) and gastric pits (small folds)
- Small Intestine: plicae circulares (circular folds) and villi (finger-like projections)
- Large Intestine: haustra (sac-like folds)
Specialized Structures in the Submucosa
- Esophagus: submucosal mucous glands
- Stomach: none
- Duodenum: Brunner's glands
- Ileum: Peyer's patches
- Large Intestine: none
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