Histology of the Alimentary System

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  • Created by: Becca
  • Created on: 23-12-13 10:30
What epithelium lines the oral cavity? What are the two types?
Stratified squamous epithelium, divided into masticatory (keratinised) & lining (non-keratinised) epithelium
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What are the 4 types of tongue papillae & what are their functions? Which type doesn't have taste buds?
Circumvallate (sensory), foliate (sensory), fungiform (thermo-regulatory) & filiform (mechanical). Filiform is the only papilla without taste buds
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What are the 4 layers of the GI tract? (superficial -> deep)
Adventitia/serosa, muscularis propria (circular longitudinal layer), sub-mucosa, mucosa (epithelium, lamina proper, muscularis mucosae)
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What is the epithelium & mucosa in the oesophagus?
Non-keratinising stratified squamous epithelium, folded lumen, broad sub-mucosa with mucous glands (proximal = lubrication, distal = acid buffering)
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What is the epithelium & mucosa in the stomach?
Epithelium: mucosal cells, chief cells, parietal cells, enteric doctrine cells. Mucosa: mucus producing & acid + pepsinogen producing, longitudinal folds (especially at greater curve)
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What is the epithelium & structural features in the bile system?
Tall columnar epithelium, folded mucosa, walls of connective tissue have large number of elastic fibres & distal bundles of smooth muscle
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What are the 3 types of cells in the pancreas?
Ductal, acinar (exocrine) & islet (endocrine) cells
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What are the 3 types of acinar secretory cells?
Serous, mucous & mixed acinus
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Card 2

Front

What are the 4 types of tongue papillae & what are their functions? Which type doesn't have taste buds?

Back

Circumvallate (sensory), foliate (sensory), fungiform (thermo-regulatory) & filiform (mechanical). Filiform is the only papilla without taste buds

Card 3

Front

What are the 4 layers of the GI tract? (superficial -> deep)

Back

Preview of the front of card 3

Card 4

Front

What is the epithelium & mucosa in the oesophagus?

Back

Preview of the front of card 4

Card 5

Front

What is the epithelium & mucosa in the stomach?

Back

Preview of the front of card 5
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