The Digestive System

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Questions and Answers

Which of the following is NOT part of the alimentary canal?

Gallbladder (correct)

Stomach

Pharynx

Tongue

Which of the following is an accessory digestive organ?

Esophagus

Mouth

Small intestine

Salivary glands (correct)

What is the function of the teeth in the digestive process?

To produce digestive enzymes

To produce bile

To absorb nutrients

To break down food into smaller pieces (correct)

Which of the following organs produces digestive enzymes?

Pancreas Signup and view all the answers

What is the role of the liver in the digestive process?

To produce bile Signup and view all the answers

What type of enzymes does the stomach secrete to aid in food digestion?

Protein-digesting enzymes Signup and view all the answers

What is the purpose of the strong acids in the stomach?

To aid in protein digestion Signup and view all the answers

Where does the stomach send the partially digested food?

The small intestines Signup and view all the answers

What is the role of the stomach in the digestive process?

To partially digest food Signup and view all the answers

What is the result of the stomach's action on food?

Partially digested food Signup and view all the answers

What is the primary function of the esophagus in the upper gastrointestinal tract?

To transport food from the pharynx to the stomach Signup and view all the answers

What type of contractions aid in the movement of food through the esophagus?

Peristaltic contractions Signup and view all the answers

Which structure does the esophagus connect to receive food?

Pharynx Signup and view all the answers

What is the esophagus composed of?

Fibromuscular tissue Signup and view all the answers

Where does the esophagus transport food to?

Stomach Signup and view all the answers

What is the primary function of the microvilli in the jejunum?

To increase the surface area of the GI tract Signup and view all the answers

Which part of the intestine connects the duodenum to the ileum?

Jejunum Signup and view all the answers

What is the jejunum responsible for in the digestive process?

Absorbing nutrients into the bloodstream Signup and view all the answers

The jejunum is a part of which system?

Digestive system Signup and view all the answers

What is the structure of the jejunum adapted to increase?

The surface area of the intestine Signup and view all the answers

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

To break down proteins and emulsify fats into micelles Signup and view all the answers

What is the purpose of the bicarbonate in pancreatic juice?

To neutralize hydrochloric acid in the stomach Signup and view all the answers

What is the function of Brunner's glands in the duodenum?

To produce bicarbonate to neutralize stomach acid Signup and view all the answers

What is the result of the emulsification of fats into micelles?

The formation of smaller fat droplets for easier digestion Signup and view all the answers

What is the primary role of the pancreatic juice in the digestive process?

To neutralize stomach acid and provide a suitable pH for digestion Signup and view all the answers

Study Notes

The Alimentary Canal

Consists of mouth, pharynx, esophagus, stomach, small intestine, and large intestine

Accessory Digestive Organs

Include teeth, tongue, gallbladder, salivary glands, liver, and pancreas

Upper Gastrointestinal Tract

Includes the esophagus, a fibromuscular tube that food passes through aided by peristaltic contractions
Food passes from the pharynx to the stomach through the esophagus

Stomach Function

Secretes protein-digesting enzymes called proteases
Secretes strong acids to aid in food digestion
Partially digested food is sent to the small intestine

Digestive Enzymes

Break down proteins
Break down bile
Emulsify fats into micelles

Duodenum Function

Contains Brunner's glands that produce bicarbonate
Contains pancreatic juice that contains bicarbonate to neutralize hydrochloric acid in the stomach

Jejunum Function

Midsection of the intestine connecting the duodenum to the ileum
Contains microvilli to increase the surface area of the GI tract

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Description

This quiz covers the different parts and functions of the human digestive system, including the alimentary canal and accessory digestive organs.