Liver, Pancreas and Gall Bladder

Question 1

Liver Capsule- Describe the capsule- Capsule covered by

Answer 1

• Thin and collagenous. Made of connective tissue.- Thin mesothelial layer

Question 2

What is:- Shown by P- Shown by V

Answer 2

• Portal triads. Have branches of hepatic artery and portal vein, as well as of the bile duct.- Centrolobular veins.

Question 3

What is:- Indicated by the arrows

Answer 3

• Hepatocytes and Sinusoids. Space of disse is between hepatocytes and endothelial lining cells.

Question 4

Connective tissue of the liver- What type of collagen is reticular fibre- Where is it found?

Answer 4

• Type 3- Parenchyma of the liver, in the space of disse.

Question 5

What is:- Indicated by “Ca” in the picture- The function of this structure

Answer 5

• Bile canaliculi. Formed by tight junctions of adjacent hepatocytes.- Allows the flow of bile from where is produced in the hepatocytes away from the central vein.

Question 6

Gall Bladder Structure and Function- What is it?- Layers- Function

Answer 6

• Muscular sac- Simple columnar epithelium with a brush border, loose connective tissue lamina proporia, coat of smooth muscle and a collagenous adventitia.- Stores and modifies bile. Delivers this bile into the duodenum for emulsification of fats.

Question 7

Parts of the Pancreas- Endocrine- Exocrine

Answer 7

• Consists of scattered islets of langerhan’s. Produce hormones such as insulin and glucagon.- Produces about a litre of enzmyes a day. These enter the duodenum through the pancreatic ducts. Lots of RER in the cells. Enzymes made inactive and activated in a cascade startedd by trypsinogen -> trypsin.

Question 8

Centroacinar Cells- What are they

Answer 8

• Duct cells which extend into the acinus

Question 9

Ampulla of Vater- What is it?

Answer 9

• The papilla at which the main pancreatic duct joins the distal bile duct and opens into the duodenum