Digestive System

Question 1

What is the primary function of the digestive system?

Answer 1

To break down food into nutrients that can be absorbed by the body.

Question 2

True or False: The mouth is the first organ involved in the digestive process.

Answer 2

True

Question 3

Which enzyme in saliva begins the digestion of carbohydrates?

Answer 3

Amylase

Question 4

What is the role of the stomach in digestion?

Answer 4

To mix food with gastric juices and break it down into a semi-liquid form called chyme.

Question 5

Fill in the blank: The _______ is a muscular tube connecting the throat to the stomach.

Answer 5

esophagus

Question 6

What is the function of the small intestine?

Answer 6

To further digest food and absorb nutrients into the bloodstream.

Question 7

Which part of the small intestine is primarily responsible for nutrient absorption?

Answer 7

The jejunum

Question 8

What is the function of bile in digestion?

Answer 8

To emulsify fats, making them easier to digest.

Question 9

True or False: The pancreas produces insulin, which is involved in digestion.

Answer 9

False

Question 10

What are the three main sections of the small intestine?

Answer 10

Duodenum, jejunum, ileum

Question 11

Which enzyme produced by the pancreas digests proteins?

Answer 11

Trypsin

Question 12

What is the primary function of the large intestine?

Answer 12

To absorb water and electrolytes from indigestible food matter.

Question 13

Fill in the blank: The _______ is the last part of the digestive system.

Answer 13

anus

Question 14

What role does fiber play in digestion?

Answer 14

It helps regulate the body’s use of sugars and aids in bowel movements.

Question 15

Which organ is responsible for detoxifying chemicals and metabolizing drugs?

Answer 15

The liver

Question 16

True or False: The gallbladder stores bile produced by the liver.

Answer 16

True

Question 17

What is the pH level in the stomach and why is it important?

Answer 17

The pH level is around 1.5 to 3.5, which is important for activating digestive enzymes and killing bacteria.

Question 18

Which enzyme breaks down fats in the digestive system?

Answer 18

Lipase

Question 19

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

Answer 19

To store feces before they are excreted from the body.

Question 20

Fill in the blank: The _______ secretes digestive enzymes and bicarbonate to neutralize stomach acid.

Answer 20

pancreas

Question 21

What is the function of villi in the small intestine?

Answer 21

To increase the surface area for absorption of nutrients.

Question 22

True or False: Saliva contains enzymes that help digest proteins.

Answer 22

False

Question 23

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

Answer 23

Gastrin

Question 24

What is the main difference between the small intestine and the large intestine?

Answer 24

The small intestine is primarily for nutrient absorption, while the large intestine is for water absorption and waste elimination.

Question 25

What are the main types of digestive enzymes?

Answer 25

Carbohydrases, proteases, and lipases.

Question 26

Fill in the blank: The _______ helps in the digestion of carbohydrates, proteins, and fats.

Answer 26

small intestine

Question 27

Which digestive organ is primarily involved in the absorption of vitamins?

Answer 27

The small intestine

Question 28

True or False: The digestive system includes only the gastrointestinal tract.

Answer 28

False

Question 29

What is the primary function of the esophagus?

Answer 29

To transport food from the mouth to the stomach.

Question 30

Which structure prevents food from entering the trachea during swallowing?

Answer 30

The epiglottis

Question 31

What is the significance of the hepatic portal vein?

Answer 31

It carries nutrient-rich blood from the intestines to the liver.

Question 32

Fill in the blank: The _______ releases bile into the duodenum.

Answer 32

gallbladder

Question 33

Which enzyme is responsible for breaking down starches into sugars?

Answer 33

Amylase

Question 34

True or False: The stomach is the main site for nutrient absorption.

Answer 34

False

Question 35

What is the role of mucus in the digestive system?

Answer 35

To protect the lining of the digestive tract and facilitate the passage of food.

Question 36

What structure connects the liver to the small intestine?

Answer 36

The bile duct

Question 37

Fill in the blank: The _______ is responsible for the final stages of digestion and absorption.

Answer 37

small intestine

Question 38

Which enzyme is crucial for protein digestion?

Answer 38

Pepsin

Question 39

What is the primary function of digestive enzymes?

Answer 39

To catalyze the breakdown of macromolecules into smaller molecules.