Lecture #25-27 Digestive System Flashcards
(73 cards)
1
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What part of the mucosa would you find mucosa associated lymphoid tissue (MALT)?
A
Lamina Propria
2
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Where is the meissner’s plexus?
A
In the submucosa along with glands and blood and lymph vessels
3
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Where would you find the Myenteric / Auerbach’s plexus?
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In the muscularis externa.
Function = peristalsis
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What comprises the PERITONEUM?
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25
What are the 4 parts of the somach?
What are the 4 parts of the somach?
26
What type of epithelium do you find in the stomach?
Simple columnar epithelium with mucos cells invaginated to form gastric pits and glands within the lamina propria
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What type of cells are found in the epithelium of the stomach?
28
Which cell screte hydrochloric acid?
A. Parietal Cells
B. Chief Cells
C. G Cells
D. Mucus Cells
A. Parietal Cells
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Which cell scretes secrete gastrin?
A. Parietal Cells
B. Chief Cells
C. G Cells
D. Mucus Cells
C. G Cells
47
Which cell screte gastric lipase?
A. Parietal Cells
B. Chief Cells
C. G Cells
D. Mucus Cells
B. Chief Cells
48
Which cell intrinsic factor?
A. Parietal Cells
B. Chief Cells
C. G Cells
D. Mucus Cells
B. Chief Cells
49
Which cell cecrete pepsinogen that activate pepsin, the activated form, that breaks down proteins into peptides?
A. Parietal Cells
B. Chief Cells
C. G Cells
D. Mucus Cells
B. Chief Cells
50
The small intestins secrete all of the following except?
A. secretins
B. gastrin
C. CCK
D. glucose-dependent insulinotropic peptide
E. intrinsic factor
The stomach secrets gastin and intrinsic factor
The small intestiin sercetes: secretins, CCK, glucose-dependent insulinotropic peptide
51
The small intestines is both retro- and intra-peritoneal. (T/F)
true
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What types of cells will you find in the duodenum mucosa layer of the epithelium?
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Identify.
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Where is this tissue found?
in the duodenum
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Where would you find this tissue?
What are distinguishing characteristics?
long, branched circular folds, no submucosal glands
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Which part of the duodenum is intraperitoneal?
The first part is intraperitoneal and the rest is retroperitoneal
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Where are peyer's patches found?
in the ileum
58
Which part of the digestive system produces vitamins B & K?
The large intestines
59
Describe the epithelial layers of the large intestines and what are the distinguising features?
•Distinguishing features:
- haustra, tenia coli, epiploic appendages
- abundance of goblet cells, no villi
• Appendix- wormlike structure attached to the cecum, containing large amounts of lymphoid tissue.
Clinical: Appendicitis, Diverticular disease
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Where is this tissue found?
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Where would you find each of these tissues?
Left: Large Intestines, Right: Stomach, Top: Duodenum, Bottom: Esophagus
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Where is the lesser omentum derived from?
The ventral Mesentery
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Where is the greater omentum derived from?
fromt the dorsal mesentery
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What are pancreatic digestive juices?
Pancreatic digestive juices cells in clusters called acini
Pancreatic amylase, trypsin, elastase
65
What is the primordial gut developed from?
the splanchnic mesoderm
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What is the arterial supply of the foregut?
Celiac Trunk
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Identify.
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What structures are derived from the foregut in organogenesis?
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What is the areterial supply for the midgut?
What structures were derived from the midgut during organogenesis?
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What is the areterial supply of the hindgut?
What structures are derived from the hindgut in organogenesis?
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Describe the developemnt of the liver.
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Describe the development of the pancreas.
Pancreas develops from two endodermal buds (ventral & dorsal) from the distal end of the foregut
•Dorsal bud appears first [26th day]
* Ventral bud appears on the 28th day
* Rotation & fusion by the 7th week
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Where does the endoderm meet the ectoderm?
