The 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 starting point of the digestive system.

Answer 2

True

Question 3

Fill in the blank: The process of chewing food is called __________.

Answer 3

mastication

Question 4

What enzyme is found in saliva that begins the digestion of carbohydrates?

Answer 4

Amylase

Question 5

Which organ is responsible for producing bile?

Answer 5

Liver

Question 6

What is the role of the stomach in digestion?

Answer 6

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

Question 7

True or False: The small intestine is longer than the large intestine.

Answer 7

True

Question 8

What are the three parts of the small intestine?

Answer 8

Duodenum, jejunum, ileum

Question 9

Multiple Choice: What is the main function of the large intestine?

Answer 9

To absorb water and electrolytes from indigestible food.

Question 10

What is the term for the rhythmic contractions of the digestive tract that move food along?

Answer 10

Peristalsis

Question 11

Fill in the blank: The __________ secretes insulin and digestive enzymes.

Answer 11

pancreas

Question 12

What is the function of villi in the small intestine?

Answer 12

To increase the surface area for absorption of nutrients.

Question 13

True or False: The esophagus is a muscular tube that connects the throat to the stomach.

Answer 13

True

Question 14

What is the pH level of the stomach, and why is it important?

Answer 14

The pH level of the stomach is about 1.5 to 3.5, which is important for activating digestive enzymes and killing bacteria.

Question 15

Multiple Choice: Which of the following is NOT a part of the digestive system?

Answer 15

Heart

Question 16

What is the role of the gallbladder in digestion?

Answer 16

To store and concentrate bile produced by the liver.

Question 17

Fill in the blank: After digestion, nutrients are absorbed into the __________.

Answer 17

bloodstream

Question 18

What is the significance of the large intestine’s microbiome?

Answer 18

It aids in the fermentation of undigested food and synthesizes certain vitamins.

Question 19

True or False: Fiber is not digestible and helps in the movement of food through the digestive system.

Answer 19

True

Question 20

What is the function of the rectum?

Answer 20

To store feces before they are expelled from the body.

Question 21

What role does hydrochloric acid play in the stomach?

Answer 21

It helps to digest food and provides an acidic environment for enzymes.

Question 22

Multiple Choice: Which nutrient is primarily digested in the stomach?

Answer 22

Proteins

Question 23

What is the term for the process by which nutrients pass through the intestinal wall into the bloodstream?

Answer 23

Absorption

Question 24

Fill in the blank: The __________ helps neutralize stomach acid as it enters the small intestine.

Answer 24

pancreatic juice

Question 25

What is the main function of saliva?

Answer 25

To moisten food and begin the digestion of carbohydrates.

Question 26

True or False: Digestion begins in the stomach.

Answer 26

False

Question 27

What is the primary function of the digestive system?

Answer 27

Breaking down food into simpler substances for absorption and energy production.

Question 28

What are the two main components of the digestive system?

Answer 28

* Alimentary canal * Digestive glands

Question 29

What are the parts of the alimentary canal?

Answer 29

* Mouth * Pharynx * Esophagus * Stomach * Small intestine * Large intestine

Question 30

What is the role of the mouth in digestion?

Answer 30

Food enters the body and undergoes mechanical and chemical digestion.

Question 31

What enzyme in saliva begins the process of starch digestion?

Answer 31

Salivary amylase

Question 32

What is the function of the epiglottis?

Answer 32

Prevents food from entering the windpipe.

Question 33

What is peristalsis?

Answer 33

Wave-like muscle contractions that push food downward through the esophagus.

Question 34

What is the role of the stomach in digestion?

Answer 34

Mixes food with gastric juice, kills bacteria, and churns food into chyme.

Question 35

What is chyme?

Answer 35

A semi-liquid paste formed in the stomach from digested food.

Question 36

What are the three parts of the small intestine?

Answer 36

* Duodenum * Jejunum * Ileum

Question 37

What occurs in the duodenum?

Answer 37

Bile and pancreatic juice mix with food for further digestion.

Question 38

What are villi and their function?

Answer 38

Finger-like projections that increase surface area for nutrient absorption.

Question 39

Complete the enzyme function: Maltase → Breaks _______ into glucose.

Answer 39

maltose

Question 40

What is the primary function of the large intestine?

Answer 40

Absorbs water and minerals, stores undigested food as feces.

Question 41

What do salivary glands secrete?

Answer 41

Saliva, which contains amylase for starch digestion.

Question 42

What is the function of bile produced by the liver?

Answer 42

Emulsifies fats, breaking them into tiny droplets.

Question 43

What does the pancreas produce?

Answer 43

Pancreatic juice, which contains trypsin, amylase, and lipase.

Question 44

List the five processes of digestion.

Answer 44

* Ingestion * Digestion * Absorption * Assimilation * Egestion

Question 45

What is the function of pepsin?

Answer 45

Digests proteins in the stomach.

Question 46

What are common disorders of the digestive system?

Answer 46

* Constipation * Diarrhea * Acidity * Ulcers

Question 47

True or False: A balanced diet and regular exercise are important for a healthy digestive system.

Answer 47

True

Question 48

What lifestyle changes can promote a healthy digestive system?

Answer 48

* Eat a balanced diet rich in fiber * Drink plenty of water * Avoid junk food * Exercise regularly