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Histology > Liver, Pancreas And Gall Bladder > Flashcards

Liver, Pancreas And Gall Bladder Flashcards

1
Q

What makes the liver capsule

A

Collagenous ct

Covered in mesothelium derived from peritoneum

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2
Q

What are portal tracts

A

Branches form vessels which enter at porta hepatis
Hepatic portal vein
Hepatic artery
Portal triad with bile duct

Also see lymphatic vessel

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3
Q

What are hepatocytes

A

Polyhedral epi cells
Main cells of liver
Form spaces for blood to flow called sinusoids

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4
Q

What su the space of disse

A

Narrow space between lining cells endothelial and hepatocytes
Projections of hepatocytes in this space

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5
Q

What supports the liver parenchyma

A

Reticular fibres collagen type 2 along with type 1 in collagen

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6
Q

What are kupffer cells

A

Scattered within sinusoids are resident macrophages

Which remove particulate matter from blood and help remove worn out RBCs

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7
Q

What is bile

A

Alkaline solution containing water, ions, phospholipids, bilirubin and bile salts

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8
Q

What is bilirubin

A

Pigment which results from breakdown of Hb in the spleen and when excreted give colour

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9
Q

What do bile salts do

A

Emulsify fats in digestive tract

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10
Q

What produces bile in the liver

A

Hepatocytes

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11
Q

Where does the bile flow via

A

Bile canniculi to bile duct in portal tracts to hepatic ducts

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12
Q

What are bile cannoli uni formed between

A

Tight junctions in cell mems of adjacent hepatocytes

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13
Q

What is the gall bladder

A 
Muscular sac 
Lined with simple columnar epi backed up by lamina propria of loose ct 
Stores bile 
Folded mucosa when empty 
Modifies bile
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14
Q

How is the gall bladder stim

A

Stim to contract and deliver bile to duo
Under nervous control vagal
By cck

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15
Q

What epi lines the gall bladder

A

Lined by tall columnar epithelial cells with a brush border

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16
Q

What is the exocrine function of the pancreas

A

Prod litre of digestive juices containing proteases, lipases, nucleases, amylase

Enter duo via panc duct

17
Q

What are the endocrine functions of the pancreas

A

Small scattered islands of tissue called islets of langerhans which produce a num of hormones such as insulin and glucagon

18
Q

What are the enzymes produced by the panc released as

A

Proenzymes

Which are cleaved when in due by enteropeptidases

19
Q

What are centre acinar cells

A

Duct cells within the acini are called centroacinar cells

20
Q

What is the ampulla of vater

A

Main pancreatic duct joins distal bile duct and opens into duo in a papillae

21
Q

What are some functions of the liver

A 
Oxi tags prod energy 
Syn lipoproteins 
Sun cholesterol 
Conv carbs and protiens to fatty acids and tags 
Syn plasma proteins 
Detox metab prods 
Syn sec bile 
Etc

Histology (17 decks)

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