Lecture 16

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What is the type of muscle present in the Muscularis mucosae?

Voluntary muscle
Cardiac muscle
Smooth muscle (correct)
Skeletal muscle

What is the function of the Myenteric plexus in the GIT?

Regulation of digestion
Regulation of nerve conduction
Regulation of muscle contraction (correct)
Regulation of blood flow

What is the term for the transition points in the GIT mucosa?

Mucosal transition zones (correct)
Abrupt transition points
GIT mucosal sites
Gastrointestinal junctions

What is the type of tissue present in the Submucosa?

Loose collagenous connective tissue (C) Signup and view all the answers

What is the name of the plexus of nerves present in the Submucosa?

Plexus of Meissner (B) Signup and view all the answers

What is the outermost layer of the GIT wall?

Serosa (D) Signup and view all the answers

What is the role of Peyer's patches in the GI tract?

To sample the contents of the GI tract (C) Signup and view all the answers

What type of epithelium lines the intestinal villi?

Simple columnar epithelium (B) Signup and view all the answers

What is the function of goblet cells in the small intestine?

To produce mucin for lubrication and protection (C) Signup and view all the answers

Where are Paneth cells typically located in the small intestine?

At the base of the crypts (D) Signup and view all the answers

What is the main function of enterocytes in the small intestine?

To absorb nutrients (A) Signup and view all the answers

What is the name of the base of a villus that is closest to the submucosa?

Crypt of Lieberkuhn (D) Signup and view all the answers

What is the name of the short section of the stomach that connects the antrum to the initial segment of the small intestine?

Pylorus (B) Signup and view all the answers

What marks the sharp transition from the glandular mucosa of the stomach to the villous mucosa of the duodenum?

Pyloric sphincter (A) Signup and view all the answers

What is the primary function of the duodenum in the digestive process?

To neutralize gastric acid and pepsin (D) Signup and view all the answers

What is unique to the duodenum?

Coiled branched tubular Brunner's glands (D) Signup and view all the answers

What is the characteristic of the mucosa in the small intestine?

Villous mucosa (C) Signup and view all the answers

What is characteristic of the ileum?

Short villi and abundant Peyer's patches (A) Signup and view all the answers

What is the characteristic feature of the recto-anal junction?

Transition from columnar to stratified squamous epithelium (D) Signup and view all the answers

What type of epithelium is present in the esophagus?

Stratified squamous epithelium (A) Signup and view all the answers

What is the function of the main blood vessels and ducts in the liver?

To transport blood and bile to and from the liver (C) Signup and view all the answers

What is the name of the framework that contains the bile ducts and blood vessels in the liver?

Portal tracts (C) Signup and view all the answers

What type of epithelium is present in the anus?

Stratified squamous epithelium (A) Signup and view all the answers

What is the function of the sinusoids in the liver?

To allow blood flow through the liver (B) Signup and view all the answers

What type of cells line the sinusoids in the liver?

Cells of the macrophage system (A) Signup and view all the answers

What is the shape of the hepatic lobule?

Hexagonal (B) Signup and view all the answers

What is the purpose of the portal tract?

To distribute oxygen and nutrients to the liver cells (A) Signup and view all the answers

What is the location of the bile ductules in the portal tract?

At the periphery of the tract (B) Signup and view all the answers

What is the central structure of the hepatic lobule?

Terminal hepatic venule (D) Signup and view all the answers

What is the direction of blood flow in the hepatic lobule?

From the portal tract to the central vein (C) Signup and view all the answers