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UM2010 GI block > UPPER GI > Flashcards

UPPER GI Flashcards

1
Q

Epithelial cells can be classified by?

A

Shape: squamous, cubois, columnar
Layers: simple, stratified
Specilisation: ciliated, mucous secreting, absorbing

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2
Q

What are the types of in the oral cavity?

A

Masticatory
Lining
Specialised

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3
Q

What are the types of mucosa in the GI tract?

A

Protective
Secretory
Absorptive
Mixture of absorptive/protective

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4
Q

What are the layers of the oral mucosa?

A

1- stratified squamous epithelium
2- lamina propria
3- submucosa
4-bone or muscle

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5
Q

Where is masticatory mucosa found?

A

In the gingiva and hard palate

These areas are subjected to more stress–compression and shearing stress while chewing and moving food around in the mouth
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6
Q

To be more durable, due to high level of stress un the areas in which is found, masticatory mucosa is?

A

Keratinised

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7
Q

Where is lining mucosa found?

A

Soft palate, cheecks and floor of the mouth

There areas are subjected to less stress
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8
Q

Why is the epithelium of the lining mucosa non-keratinised?

A

The areas it covers are subjected to less stress

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9
Q

Where is specialised mucosa found?

A

Dorsum of the tongue

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10
Q

What does soecialised mucosa contain that makes it specila?

A

Papillae and taste buds

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11
Q

How is the epithelium of specialised mucosa?

A

Partially keratinised

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12
Q

All papillae contain taste buds, except which type?

A

Filliform papillae

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13
Q

What are the gastrointestinal layers?

A 
Epithelial layer
Lamina propria
Muscularis mucosa
Submucosa
Muscularis propria: circular muscle
                                    longitudinal muscle 
Adventitia
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14
Q

What is the issue with reflux and goards at athe gastro oesophageal junction?

A

Cell structure changes from stratified squamous epithelium to simple columnar epithelium

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15
Q

What is the epithelium of the stomach?

A

Simple columnar epithelium

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16
Q

What are gastric pits in the stomach?

A

Invaginations formed by the epithelium

17
Q

What are the layers of the stomach?

A 
Epithelial
Lamina propria: mucosa
Muscularis mucosa 
Submucosa (contains bloss vessels)
Muscularis propria: oblique, circular, longitudinal
18
Q

Where are Brunners gland found? what do they produce?

A

In duodenum-

Produce alkaline juices into the duodenum to help neutralise acidic stomach content coming in

19
Q

What are Pairs patches? Where are they found?

A

Little balls of lymphoid tissue

Found in the ileum

20
Q

Why does the rectum mucosa contain many globet cells?

A

Increase amount of mucous to lubricate faeces

UM2010 GI block (4 decks)

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