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Anatomy and Functions of the Digestive System Quiz

#1

Which organ produces bile for digestion?

Liver
Explanation

The liver produces bile, which aids in the digestion and absorption of fats.

#2

What is the function of the small intestine in the digestive system?

Absorption of nutrients
Explanation

The small intestine is where most of the absorption of nutrients from food takes place.

#3

Which of the following is not a component of saliva?

Pepsin
Explanation

Pepsin is an enzyme found in gastric juice, not saliva, and it aids in protein digestion in the stomach.

#4

Which organ stores bile produced by the liver?

Gallbladder
Explanation

The gallbladder stores and concentrates bile produced by the liver until it's needed for digestion.

#5

Which of the following is NOT a section of the small intestine?

Colon
Explanation

The colon is part of the large intestine, not the small intestine.

#6

Which of the following is NOT a component of gastric juice?

Trypsin
Explanation

Trypsin is an enzyme produced in the pancreas, not a component of gastric juice.

#7

Which enzyme is responsible for breaking down carbohydrates in the mouth?

Amylase
Explanation

Amylase breaks down carbohydrates (starches) into sugars in the mouth during digestion.

#8

What is the main function of the large intestine?

Storage of waste
Explanation

The large intestine primarily stores waste material and absorbs water.

#9

Where does the majority of nutrient absorption occur in the digestive system?

Small intestine
Explanation

The small intestine is the primary site of nutrient absorption in the digestive system.

#10

Which of the following is not a function of the stomach in the digestive system?

Absorption of nutrients
Explanation

The stomach primarily breaks down food and does not absorb nutrients like the small intestine.

#11

Which part of the digestive system is responsible for producing insulin and glucagon?

Pancreas
Explanation

The pancreas produces insulin and glucagon, hormones that regulate blood sugar levels.

#12

Which enzyme is responsible for breaking down proteins in the stomach?

Pepsin
Explanation

Pepsin is the enzyme in the stomach that breaks down proteins into smaller peptides.

#13

Which hormone stimulates the release of gastric juices in the stomach?

Gastrin
Explanation

Gastrin stimulates the secretion of gastric acid (HCl) and pepsinogen in the stomach.

#14

What is the role of hydrochloric acid in the stomach?

Activation of pepsinogen to pepsin
Explanation

Hydrochloric acid in the stomach helps convert pepsinogen into its active form, pepsin, for protein digestion.

#15

What is the function of bile salts in digestion?

Emulsify fats
Explanation

Bile salts emulsify fats, breaking them into smaller droplets for better digestion and absorption.

#16

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

Part of the lymphatic system, assists in immune function
Explanation

The appendix is a lymphoid organ that plays a role in immune function, particularly in the gut.

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