17

Question 1

What is the primary function of the digestive system?
A) Circulate blood
B) Break down food into nutrients
C) Regulate body temperature
D) Produce hormones

Answer 1

Answer: B) Break down food into nutrients

Question 2

Which organ is primarily responsible for nutrient absorption?
A) Stomach
B) Small intestine
C) Large intestine
D) Esophagus

Answer 2

Answer: B) Small intestine

Question 3

What is the function of the stomach?
A) Absorb water
B) Store bile
C) Break down proteins
D) Produce insulin

Answer 3

Answer: C) Break down proteins

Question 4

Which enzyme is responsible for the digestion of carbohydrates?
A) Pepsin
B) Amylase
C) Lipase
D) Lactase

Answer 4

Answer: B) Amylase

Question 5

What is the primary role of the large intestine?
A) Digest proteins
B) Absorb nutrients
C) Absorb water and electrolytes
D) Produce bile

Answer 5

Answer: C) Absorb water and electrolytes

Question 6

Which structure prevents food from entering the trachea during swallowing?
A) Epiglottis
B) Uvula
C) Esophagus
D) Pharynx

Answer 6

Answer: A) Epiglottis

Question 7

What is bile and where is it produced?
A) A digestive enzyme produced in the stomach
B) A fluid that emulsifies fats, produced in the liver
C) A type of hormone produced in the pancreas
D) A protein found in saliva

Answer 7

Answer: B) A fluid that emulsifies fats, produced in the liver

Question 8

What is the role of the pancreas in digestion?
A) Store bile
B) Produce digestive enzymes and hormones
C) Absorb nutrients
D) Break down fats

Answer 8

Answer: B) Produce digestive enzymes and hormones

Question 9

Which part of the digestive system is responsible for the transport of food from the mouth to the stomach?
A) Esophagus
B) Small intestine
C) Pharynx
D) Large intestine

Answer 9

Answer: A) Esophagus

Question 10

What is the function of the villi in the small intestine?
A) Increase surface area for absorption
B) Produce enzymes
C) Store waste
D) Regulate pH levels

Answer 10

Answer: A) Increase surface area for absorption

Question 11

Which type of digestion occurs in the mouth?
A) Mechanical and chemical digestion
B) Only mechanical digestion
C) Only chemical digestion
D) No digestion occurs

Answer 11

Answer: A) Mechanical and chemical digestion

Question 12

What is chyme?
A) The enzyme that digests proteins
B) The mixture of food and digestive juices in the stomach
C) The fluid produced by the liver
D) The waste product of digestion

Answer 12

Answer: B) The mixture of food and digestive juices in the stomach

Question 13

Which organ is responsible for detoxifying substances in the body?
A) Stomach
B) Liver
C) Pancreas
D) Gallbladder

Answer 13

Answer: B) Liver

Question 14

What is the main function of saliva in digestion?
A) Break down fats
B) Begin the digestion of carbohydrates
C) Neutralize stomach acid
D) Absorb nutrients

Answer 14

Answer: B) Begin the digestion of carbohydrates

Question 15

How long does food typically remain in the stomach?
A) 1-2 hours
B) 2-4 hours
C) 6-8 hours
D) 10-12 hours

Answer 15

Answer: B) 2-4 hours

Question 16

What are the primary nutrients absorbed in the small intestine?
A) Water and electrolytes
B) Carbohydrates, proteins, and fats
C) Vitamins and minerals
D) Only carbohydrates

Answer 16

Answer: B) Carbohydrates, proteins, and fats

Question 17

What is the role of the rectum in the digestive system?
A) Absorb nutrients
B) Store and expel waste
C) Digest food
D) Produce bile

Answer 17

Answer: B) Store and expel waste

Question 18

What condition results from inflammation of the stomach lining?
A) Gastroenteritis
B) Gastritis
C) Colitis
D) Appendicitis

Answer 18

Answer: B) Gastritis

Question 19

Which vitamin is primarily produced by bacteria in the large intestine?
A) Vitamin A
B) Vitamin B12
C) Vitamin K
D) Vitamin C

Answer 19

Answer: C) Vitamin K

Question 20

What is the primary function of the gallbladder?
A) Produce digestive enzymes
B) Store and concentrate bile
C) Absorb nutrients
D) Neutralize stomach acid

Answer 20

Answer: B) Store and concentrate bile

Question 21

Which part of the digestive tract is the longest?
A) Stomach
B) Large intestine
C) Small intestine
D) Esophagus

Answer 21

Answer: C) Small intestine

Question 22

What is the main source of energy for the body that is absorbed during digestion?
A) Proteins
B) Carbohydrates
C) Fats
D) Vitamins

Answer 22

Answer: B) Carbohydrates

Question 23

What type of muscle contractions moves food through the digestive tract?
A) Isometric
B) Peristalsis
C) Tonic
D) Voluntary

Answer 23

Answer: B) Peristalsis

Question 24

What is the pH level of stomach acid?
A) Neutral
B) Acidic, around 1.5-3.5
C) Alkaline
D) Slightly basic

Answer 24

Answer: B) Acidic, around 1.5-3.5

Question 25

Which digestive disorder is characterized by the presence of pouches in the colon?
A) Gastroesophageal reflux disease (GERD)
B) Diverticulosis
C) Irritable bowel syndrome (IBS)
D) Celiac disease

Answer 25

Answer: B) Diverticulosis

Question 26

What substance is produced by the pancreas to neutralize stomach acid?
A) Bile
B) Amylase
C) Sodium bicarbonate
D) Pepsin

Answer 26

Answer: C) Sodium bicarbonate

Question 27

What is the main function of the appendix?
A) Digest food
B) Absorb nutrients
C) Store gut bacteria
D) Produce enzymes

Answer 27

Answer: C) Store gut bacteria

Question 28

Which organ is NOT part of the digestive tract?
A) Stomach
B) Esophagus
C) Liver
D) Small intestine

Answer 28

Answer: C) Liver

Question 29

Which macronutrient is primarily broken down by lipase?
A) Carbohydrates
B) Proteins
C) Fats
D) Vitamins

Answer 29

Answer: C) Fats

Question 30

What is the primary function of dietary fiber?
A) Provide energy
B) Aid in digestion and prevent constipation
C) Promote fat absorption
D) Supply essential vitamins

Answer 30

Answer: B) Aid in digestion and prevent constipation