Structure of Mucosal Villi in Digestive System

Questions and Answers

What is the primary function of the microvilli on the epithelial cells of the villus?

To filter blood from the liver

To transport fats to the bloodstream

To increase the surface area for absorption (correct)

To connect the gallbladder to the duodenum

Which structure is responsible for transporting absorbed fats away from the digestive system?

Capillaries

Arteriole

Lacteal (correct)

Venule

What is the role of the liver in digestion?

To store bile in the gallbladder

To transport fats to the villi

To absorb nutrients directly from the intestines

To produce bile and filter blood (correct)

Which structure connects the gallbladder to the duodenum?

Common bile duct Signup and view all the answers

What supports the structure of the villus?

Smooth muscle layer Signup and view all the answers

Which of the following is NOT a function of the liver?

Transporting nutrients to the villi Signup and view all the answers

Which vascular structures run along the length of the villus?

Arteriole and venule Signup and view all the answers

What is the function of the microvilli found on the epithelial cells?

To increase the digestive surface area Signup and view all the answers

Study Notes

Structure of Mucosal Villi

Villus: Small, finger-like projections in the small intestine lining, enhancing nutrient absorption.
Epithelial cells of the villus have microvilli, significantly increasing surface area.
Contains a network of capillaries that transport absorbed nutrients into the bloodstream.
Lacteal: Lymphatic vessel within the villus, responsible for fat transport to the bloodstream.
Arterioles and venules supply blood along the villus, supporting capillary function and lacteal.
Supported by muscularis mucosa, a layer of smooth muscle providing structural integrity.

Liver and its Associated Structures

Liver: Multifunctional organ that produces bile, filters blood, and stores nutrients.
Gallbladder: Stores bile produced by the liver for fat digestion.
Cystic duct: Connects the gallbladder to the common bile duct.
Common bile duct: Transports bile to the small intestine, specifically the duodenum.
Bile's role: Aids in fat digestion by being secreted into the duodenum from the liver through the bile ducts.

Description

This quiz explores the structure and function of mucosal villi, small projections in the small intestine that play a key role in nutrient absorption. Learn about the components of a villus, including epithelial cells, microvilli, capillaries, and lacteals. Test your understanding of their importance in the digestive process.