Alimentary Canal Quiz: Digestive System Flashcards

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Questions and Answers

What is the basic structure of the alimentary canal?

Irregular structure without a defined lumen

Spherical structure with multiple compartments

Flat structure with no specific layers

Tubular structure with histologic layers surrounding a lumen (correct)

Which organs are part of the large intestine?

Duodenum, jejunum, ileum

Liver, gall bladder, pancreas

Cecum, appendix, ascending, transverse, descending colon, rectum (correct)

Esophagus, stomach, small intestine

What do the accessory digestive organs do?

Provide structural support to the alimentary canal

Directly contact food and absorb nutrients

Facilitate mechanical breakdown of food

Function as glands that secrete substances into the alimentary canal (correct)

What is the embryological origin of the liver and pancreas?

Outgrowths of the early alimentary canal Signup and view all the answers

What is the main function of the alimentary canal?

Propulsion, secretion, digestion, absorption, and immune function Signup and view all the answers

Which layer of the alimentary canal contains larger glands and Meissner’s plexus?

Submucosa Signup and view all the answers

What regulates the inner circular and outer longitudinal layers of the muscularis?

Auerbach’s plexus Signup and view all the answers

What is the function of the serosa in the alimentary canal?

Secreting peritoneal fluid Signup and view all the answers

What is the role of the esophagus in the digestive system?

Food propulsion and has upper and lower sphincters Signup and view all the answers

What is the main function of the stomach in the digestive system?

Expands to store food, aids in mechanical and chemical digestion, and regulates food intake Signup and view all the answers

Which organ is the main site of digestion, absorption, and secretion in the digestive system?

Small intestine Signup and view all the answers

What optimizes the surface area for absorption in the small intestine?

Highly folded epithelium and mucosa Signup and view all the answers

What is the main function of the large intestine in the digestive system?

Mainly absorbs water and houses gut microbes Signup and view all the answers

Which organs are considered accessory in the digestive system?

Liver, gallbladder, and pancreas Signup and view all the answers

What is the involuntary contraction of the abdominal musculature, usually accompanied by severe pain?

Rigidity Signup and view all the answers

Which condition often causes a large liver with a firm, nontender edge?

Liver cirrhosis Signup and view all the answers

What does decreased bowel sounds often suggest?

Bowel obstruction Signup and view all the answers

What can be a cause of increased bowel sounds?

Inflammatory bowel disease Signup and view all the answers

What is the most likely cause of abdominal pain in the hypogastric region?

Bladder Signup and view all the answers

What is the voluntary contraction of the abdominal musculature due to abdominal discomfort?

Guarding Signup and view all the answers

What is the time duration recommended to listen before assuming absence of bowel sounds?

2 minutes Signup and view all the answers

What can cause a palpable liver without necessarily indicating hepatomegaly?

Enlarged spleen Signup and view all the answers

What is the cause of abdominal pain in the left iliac region?

Diverticulitis Signup and view all the answers

What is the cause of abdominal pain in the epigastric region?

Stomach Signup and view all the answers

What is the cause of increased bowel sounds?

Diarrhea Signup and view all the answers

What is the cause of decreased bowel sounds?

Early bowel obstruction Signup and view all the answers

Study Notes

Alimentary Canal and Digestive System Overview

The alimentary canal performs propulsion, secretion, digestion, absorption, and immune function.
The canal is made up of layers including mucosa, submucosa, muscularis, and outer layers.
The submucosa contains larger glands and a network of neurons known as Meissner’s plexus.
The muscularis has inner circular and outer longitudinal layers regulated by Auerbach’s plexus.
The outer layer can be adventitia or serosa, with the serosa secreting peritoneal fluid.
The peritoneal cavity is the fluid-filled gap between the abdominal wall and organs.
The esophagus is a 25cm tube for food propulsion and has upper and lower sphincters.
The stomach expands to store food, aids in mechanical and chemical digestion, and regulates food intake.
The small intestine is the main site of digestion, absorption, and secretion with three components.
The highly folded epithelium and mucosa of the small intestine optimize surface area for absorption.
The large intestine mainly absorbs water and houses gut microbes.
Accessory organs like the liver, gallbladder, and pancreas play vital roles in digestion and metabolism.

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Description

Test your knowledge of the alimentary canal and digestive system with this quiz. Explore topics such as the layers of the canal, functions of different organs, and the roles of accessory organs in digestion and metabolism.

Alimentary Canal and Digestive System Quiz