Histology Flashcards
Name the layers of the gut tube
Mucosa
Submucosa
Muscularis externa
Adventitia/ serosa

Name parts of mucosa
Epithelium
Lamina propria
Muscularis mucosae
Name the basic types of tissues
Epithelial
Connective
Muscle
Nervous
What type of epithelium is the oesophagus?
stratified squamous non-keratinised epithelium
What does the submucosa show in the oesophagus?
Mucous glands
What type of muscle is the upper 1/3 layer of the muscular layer in the oesophagus?
Skeletal
What type of muscle is the middle 1/3 layer of the muscular layer in the oesophagus?
Smooth and skeletal
What type of muscle is the lower 1/3 layer of the muscular layer in the oesophagus?
Smooth
What type of epithelium lines the stomach?
simple columnar epithelium
What does the epithelium look like in the stomach?
Pale
What colour do parietal cells stain?
Pink
What glands are found in the muscosa of the stomach?
Gastric glands
What cells are found at the base of the gland of the stomach?
Chief cells
What is found in the mucosa of the small intestine?
Peyer’s patches
What are Peyer’s patches?
Lymphoid aggregations in mucosa
What unique feature does the small intestines have?
Villi
What crypts are found in the small intestine?
Crypts of Leiberkuhn
What glands are found in the submucosa of the duodenum?
Brunner’s glands
What does the mucosa look like in the large intestine?
Thick
What glands are found in the GI system?
Salivary glands
Pancreas
Liver
What do secretory glands look like?
Roundish structure with columnar cells and nuclei at the base
What is found in the histology of the pancreas?
Islets of largerhans
Pancreatic acini
Pancreatic ducts
What fibres are found in the connective tissue of mucosa
Elastin fibres
What histological feautre is unique to the oesophagus and stomach
Location of mucus glands in submucosa
Where are more mucous glands found in the oesophagus?
Upper and lower thirds
What plexus is found in the muscularis propria of the oesophagus?
Auerbachs plexus
Is adventitia or serosa found in the oesophagus?
Both
Majority is adventitia
Name the histological regions of the stomach
Cardia
Fundus
Pylorus
Is serosa or adventitia found in the stomach?
Serosa
What is found is the mucosa of the cardia?
Cardiac glands
Gastric pits
Why is the muscularis propria unique in the stomach?
Contain 3 layers of smooth muscles
What is found in the serosa of the cardia?
Loose connective tissue
Blood vessels
Adipose tissue
Nerves
Lympathic
What are the rugae formed from?
Mucosa and submucosa
What cells are present in the mucosa of the fundus?
Parietal
Mucous
Chief
What is unique to the pylorus?
Promintant gastirc pits
What do the pyloric glands look like?
Shorter
More branches
More coils
Is there serosa or adventitia in the small intestine?
Serosa
Compare the villi in the duodenum and ileum
Tall and slender in duodenum
Shorter and broader in ileum
Which part of the small intestines contains peyers patches?
Ileum
What are lacteals?
specialized lymph capillaries present in ileum
White spaces
what do bruners glands look like?
Coiled tubular glands
Pass though muscularis mucosa
What colour are goblets cells seen as?
Dark purple
Where do crypts of lieberkuhn extend though in the large intestine?
Majority of mucosa
What is the liver surrounded by?
Glisson’s capsule
What are hepatocyes separated by?
Sinusoids
What is the liver organised into?
Hepatic lobules
What are the main functional cells of the pancreas?
Parenchyma
How can we identify islets of Langerhans cells?
Lighter stain and smaller cells