Histology: Hepatobiliary System

Question 1

Hepatic Lobule

Answer 1

Hexagonal part of a liver surrounded by the portal triad with the central vein in the center

Question 2

Hepatic Acinus

Answer 2

Part of a lobule that includes Zones 1, 2 and 3

Question 3

What is Zone 3 closest to?

Answer 3

Central Vein

Question 4

What is Zone 1 closest to?

Answer 4

The portal triad

Question 5

How can you tell the portal vein from the hepatic artery?

Answer 5

The portal vein is larger and the hepatic artery has a thick layer of smooth muscle

Question 6

How can you identify the bile duct?

Answer 6

It will be surrounded with cuboidal epithelial cells?

Question 7

Sinusoids

Answer 7

Vascular spaces that are lined with fenestrated epithelium that allows blood free access to hepatocytes

Question 8

What allows for the anastamoses of the blood in the liver?

Answer 8

Cords

Question 9

Kupffer Cells

Answer 9

Found in the sinusoids and they police the blood by engulfing pathogens - macrophages of the liver

Question 10

Space of Disse

Answer 10

Contains connective tissue and reticulin fibers that hold the hepatocytes together as well as stellate cells which store vitamin A

Question 11

What kind of blood is found in the sinusoids?

Answer 11

Mixed venous and arterial blood

Question 12

Where does the central vein empty?

Answer 12

Hepatic vein

Question 13

What are the layers of gall bladder?

Answer 13

Mucosa
Serosa/Adventitia

The gallbladder does not have a muscularis mucosa or submucosa.