Flashcards

Digestive Tract Histology: Oral Cavity to Intestine

Heron Flight Inglês 32 flashcards

Hard palate •strat squa but non kerat •lamina propria ridges for ^SA

Flashcards do conjunto (32)

1—Hard palate
•strat squa but non kerat
•lamina propria ridges for ^SA
2—Tongue
•Fungiform
-have tastebuds
3—Respiratory Epithelium
ciliated pseudo strat + goblet
4—olfactory epithelium
•bowmans glands, no goblet, taller epi
5—Folliate papillae
•many tastebuds
•many Von Ebners glands
6—Filliform Papillae
•parakaratinised
•no taste buds
7What are the three cell types in a tastebudneuroepithelial
supporting
basal
8—•non kerat strat squamous
•layers of muscle
•serosa on the outside
•sometimes oesophageal glands
•transition from skeletal to smooth muscle!! Identify superior to inferior
9—Parotid Gland
•acini make the secretion
-all here are serous, very dark stained cells
•myoepithelial cells turn up as usual
10—Sub mandibular
•more mucus as it is mixed, primarily serous
-serous demilunes is the shape of the non staining bit
11—Sublingual
•mix of serous acini and mucus
-more mucus
12—Cardiac stomach
-mainly mucous
-shallow gastric pits
-many cardiac glands
13—Fundic stomach
•many glands
-many parietal (pink cells)
-enteroendocrine cells (blue/purple)
-chief cells
14—Pyloric stomach
•mostly mucous
•deep gastric pits
15—junction of pyloric stomach and duodenum
16What glands are in the duodenumBrunners glands
17What protects stomach epithelium from HCl?Mucous secreting neck cells
18What do gastric parietal cells secreteHCl and intrinsic factor (b12 complex)
19What do gastric chief cells do?Make pepsinogen, which turns into pepsin after touching parietal cells
20To tell a gastric cell from a parietal cell?Chief are basal and darker, parietal stain light cytoplasm
21What are the exocrine glands?•All the salivary
• 95% of Pancreas
22What are the endocrine glands?•Pituitary
•Thyroid + para
•Adrenal
•Pancreatic islets
23What epithelium does the small intestine haveSimple Columnar
24What are the cells of the small intestineEnterocytes
goblet
enteroendocrine
paneth
microfold
25What is an enterocytecolumnar cell with microvilli= absorbing in the small intestines
26what do enteroendocrine cells make?Hormones, also process some lipids
27What are M (microfold) cells?modified enteroendocytes with microfolds instead of microvilli. they cover lymphatic nodules -> payers patches
28what runs out of Brunners glands?Crypts of Lieberkuhn
29Does the jejunum have peyers patches?No the ileum does
30What is a defining feature of the duodenum?Brunners glands in sub mucosa, crypts of lieberkuhn
31How to tell the difference between small intestine and largeNO villi, smooth mucosa, more goblet cells, teniae coli
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