Histology of Biliary Passages and Exocrine Pancreas L3
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Histology of Biliary Passages and Exocrine Pancreas L3

Explore the histological features of intrahepatic biliary passages, extrahepatic bile ducts, gallbladder, and exocrine pancreas in this quiz. Test your knowledge on the color index, main text, important points, female and male slides, Dr. note, and extra editing file related to the gastrointestinal and nutrition block.

Created by
@AlluringDalmatianJasper

Questions and Answers

What is the shape of the interlobular bile ducts' epithelium near the porta hepatis?

Simple columnar epithelium

What type of epithelium lines the interlobular bile ducts in the portal areas?

Simple columnar epithelium

Which structure is responsible for storing, concentrating, and releasing bile?

Gallbladder

Which part of the pancreas produces digestive pancreatic enzymes?

<p>Exocrine pancreas</p> Signup and view all the answers

What is the shape of the pancreatic acinar cells?

<p>Pyramidal</p> Signup and view all the answers

What is the composition of the gallbladder's wall?

<p>Mucosa, muscularis, and serosa</p> Signup and view all the answers

Why does the gallbladder dilate to store bile?

<p>To store bile until fat is present in the duodenum</p> Signup and view all the answers

What covers the gallbladder and extrahepatic bile ducts?

<p>Peritoneum and serosa or adventitia</p> Signup and view all the answers

What do microvilli project from into the bile canaliculi?

<p>Hepatocytes</p> Signup and view all the answers

Which cells empty into interlobular bile ducts in portal areas?

<p>Cholangiocytes</p> Signup and view all the answers

What forms the common hepatic duct?

<p>Union of right and left hepatic ducts and cystic duct with gallbladder attached</p> Signup and view all the answers

What is the main epithelium feature of the bile canaliculi?

<p>Simple squamous epithelium</p> Signup and view all the answers

What is the composition of the Bile ductules (Canals of Hering)?

<p>Simple cuboidal epithelial cells</p> Signup and view all the answers

What forms the intrahepatic bile ducts?

<p>Union of the right &amp; left hepatic ducts</p> Signup and view all the answers

Where are the biliary passages located?

<p>Both within and outside the liver</p> Signup and view all the answers

What are bile canaliculi?

<p>&quot;Narrow channels between hepatocytes&quot;</p> Signup and view all the answers

What is the main function of Bile Ductules (Canals of Hering)?

<p>Bile transport to hepatic ducts</p> Signup and view all the answers

Which structure is formed by the union of cystic duct from gallbladder and common hepatic duct?

<p>Common bile duct</p> Signup and view all the answers

What is the composition of Biliary passages within liver?

<p>No epithelium</p> Signup and view all the answers

What are Bile Ductules also known as?

<p>Cholangiocytes</p> Signup and view all the answers

What structures are included in Extrahepatic passage?

<p>Both common hepatic and cystic ducts</p> Signup and view all the answers

Which part is formed by the union of right & left hepatic?

<p>Intrahepatic passage only</p> Signup and view all the answers

Where are Biliary passages located?

<p>Both within and outside the liver</p> Signup and view all the answers

Study Notes

  • Interlobular bile ducts are located in portal areas of the liver.
  • They begin as simple cuboidal epithelium (Cholangiocytes) and transition to simple columnar epithelium near the porta hepatis.
  • Microvilli project from hepatocytes into the bile canaliculi, increasing surface area and preventing leakage with tight junctions.
  • Bile ductules, cuboidal epithelial cells, empty into interlobular bile ducts in portal areas.
  • Interlobular bile ducts eventually merge to form larger ducts and eventually unite to form the right and left hepatic ducts.
  • The common hepatic duct is formed by the union of the right and left hepatic ducts and the cystic duct, which arises from the gallbladder.
  • The gallbladder is a saclike structure that stores, concentrates, and releases bile. Its wall is formed of mucosa, muscularis, and serosa or adventitia.
  • The gallbladder dilates to store bile because it's not immediately secreted to the duodenum until there's fat present.
  • The pancreas is a mixed gland with both exocrine and endocrine parts.
  • The exocrine pancreas produces digestive pancreatic enzymes, and its structure includes pancreatic acini, centroacinar cells, and a duct system.
  • The pancreatic acini, composed of serous acini, have a pyramidal shape and a duct shoved into their lumen. The cytoplasm is basophilic in the basal part and acidophilic in the apical part.
  • The gallbladder and the extrahepatic bile ducts share similar structures, but they are covered by peritoneum, unlike the gallbladder's serosa or adventitia.

MCQs: Q1. Which structure does the simple cuboidal epithelium of interlobular bile ducts transition to near the porta hepatis? A. Simple squamous epithelium B. Simple columnar epithelium

Q2. Which of the following is the one that lines the interlobular bile ducts in the portal areas? A. Simple cuboidal epithelium B. Simple squamous epithelium C. Simple columnar epithelium

Q3. Which of the following structures is responsible for storing, concentrating, and releasing bile? A. Hepatic ductules B. Interlobular bile ducts C. Gallbladder

Q4. Which part of the pancreas produces digestive pancreatic enzymes? A. Exocrine pancreas B. Endocrine pancreas

Q5. What is the shape of the pancreatic acinar cells? A. Pyramidal B. Tubular C. Stratified columnar

Q6. Which structure lines the interlobular bile ducts in the portal areas? A. Simple cuboidal epithelium B. Simple squamous epithelium C. Simple columnar epithelium

Answer key: 1. B, 2. C, 3. C, 4. A, 5. A, 6. C.

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