Major Organs of the Digestive System: Interactive Learning Quizzes

Question 1

The process of breaking down food into smaller molecules is called:

Accepted Answer

Digestion

Answer

Absorption

Answer

Assimilation

Answer

Excretion

Question 2

Which enzyme initiates the digestion of carbohydrates?

Accepted Answer

Amylase

Answer

Pepsin

Answer

Lipase

Answer

Nucleases

Question 3

The main function of the liver is to:

Accepted Answer

Filter blood and produce bile

Answer

Digest carbohydrates and proteins

Answer

Absorb nutrients and water

Answer

Produce insulin and glucagon

Question 4

Which organ secretes digestive enzymes such as trypsin and chymotrypsin?

Accepted Answer

Pancreas

Answer

Stomach

Answer

Gallbladder

Answer

Small intestine

Question 5

The absorption of nutrients into the bloodstream mainly occurs in the:

Accepted Answer

Small intestine

Answer

Esophagus

Answer

Stomach

Answer

Large intestine

Question 6

The large intestine's primary role is to:

Accepted Answer

Absorb water and electrolytes

Answer

Digest proteins and fats

Answer

Produce enzymes for digestion

Answer

Store undigested food

Question 7

Which type of carbohydrate is primarily broken down in the small intestine?

Accepted Answer

Starch

Answer

Glucose

Answer

Fructose

Answer

Cellulose

Question 8

Which organ secretes enzymes that neutralize stomach acid and assist in the digestion of fats and proteins in the small intestine?

Accepted Answer

Pancreas

Answer

Liver

Answer

Gallbladder

Answer

Esophagus

Question 9

Which organ is responsible for storing and concentrating bile before its release into the small intestine?

Accepted Answer

Gallbladder

Answer

Liver

Answer

Pancreas

Answer

Stomach

Question 10

Which part of the digestive system is responsible for absorbing water from undigested material and forming feces?

Accepted Answer

Large intestine

Answer

Liver

Answer

Gallbladder

Answer

Pancreas

Question 11

What is the process by which solid food is broken down into smaller particles in the mouth?

Accepted Answer

Mastication

Answer

Digestion

Answer

Absorption

Answer

Peristalsis

Question 12

Which hormone plays a key role in stimulating the secretion of gastric juices in the stomach?

Accepted Answer

Gastrin

Answer

Insulin

Answer

Glucagon

Answer

Pepsin

Question 13

What is the main function of the esophagus in the digestive system?

Accepted Answer

To transport food from the mouth to the stomach

Answer

To digest food

Answer

To store food

Answer

To absorb water

Question 14

Which organ is primarily responsible for producing bile?

Accepted Answer

Liver

Answer

Pancreas

Answer

Gallbladder

Answer

Stomach

Question 15

Which of the following sphincters prevents the backflow of stomach contents into the esophagus?

Accepted Answer

Cardiac sphincter

Answer

Pyloric sphincter

Answer

Ileocecal valve

Answer

Anal sphincter

Question 16

Which of the following enzymes is NOT secreted by the pancreas?

Accepted Answer

Pepsin

Answer

Amylase

Answer

Lipase

Answer

Trypsin

Question 17

What type of tissue lines the inner surface of the stomach?

Accepted Answer

Simple columnar epithelium

Answer

Stratified squamous epithelium

Answer

Transitional epithelium

Answer

Pseudostratified ciliated epithelium

Question 18

Which organ is responsible for producing hydrochloric acid (HCl)?

Accepted Answer

Stomach

Answer

Small intestine

Answer

Liver

Answer

Pancreas

Question 19

What is the primary function of the villi in the small intestine?

Accepted Answer

Increase surface area for nutrient absorption

Answer

Secrete digestive enzymes

Answer

Transport nutrients into the bloodstream

Answer

Store bile

Question 20

What is the name of the hormone that stimulates the secretion of gastric acid?

Accepted Answer

Gastrin

Answer

Secretin

Answer

Cholecystokinin

Answer

Glucagon

Question 21

Which organ is responsible for the majority of nutrient absorption?

Accepted Answer

Small intestine

Answer

Esophagus

Answer

Stomach

Answer

Large intestine

Question 22

Which of the following is NOT a function of the stomach?

Accepted Answer

Absorbing nutrients

Answer

Secreting hydrochloric acid

Answer

Breaking down proteins

Answer

Storing food

Question 23

Which of the following organs produces bile, which aids in fat digestion?

Accepted Answer

Liver

Answer

Stomach

Answer

Small intestine

Answer

Pancreas

Question 24

Which structure is responsible for absorbing water and electrolytes from stool?

Accepted Answer

Colon

Answer

Cecum

Answer

Rectum

Answer

Anus

Question 25

Which of the following is NOT a layer of the digestive tract?

Accepted Answer

Epidermis

Answer

Mucosa

Answer

Submucosa

Answer

Muscularis

Question 26

Which structure regulates the flow of bile and pancreatic enzymes into the small intestine?

Accepted Answer

Duodenal papilla

Answer

Pyloric sphincter

Answer

Hepatic duct

Answer

Pancreatic duct

Question 27

Which hormone stimulates the release of gastric juices?

Accepted Answer

Gastrin

Answer

Secretin

Answer

Cholecystokinin

Answer

Insulin

Question 28

Which valve prevents food from flowing back into the esophagus?

Accepted Answer

Cardia

Answer

Pyloric sphincter

Answer

Duodenal papilla

Answer

Ileocecal valve

Question 29

Which of the following is NOT a function of the large intestine?

Accepted Answer

Nutrient absorption

Answer

Water reabsorption

Answer

Feces storage

Answer

Bacterial fermentation

Question 30

Which part of the small intestine is responsible for digesting most nutrients?

Accepted Answer

Jejunum

Answer

Duodenum

Answer

Ileum

Answer

Cecum

Question 31

Which structure increases the surface area for nutrient absorption in the small intestine?

Accepted Answer

Villi

Answer

Microvilli

Answer

Rugae

Answer

Keratinized epithelium

Question 32

Which hormone is responsible for stimulating pancreatic secretion of enzymes?

Accepted Answer

Cholecystokinin

Answer

Secretin

Answer

Gastrin

Answer

Insulin

Question 33

Which organ stores and concentrates bile?

Accepted Answer

Gallbladder

Answer

Pancreas

Answer

Liver

Answer

Stomach

Question 34

Which valve separates the small intestine from the large intestine?

Accepted Answer

Ileocecal valve

Answer

Stomach

Answer

Peyer's patches

Answer

Anal sphincter

Question 35

Which of the following contributes to the acidic pH of the stomach?

Accepted Answer

Hydrochloric acid

Answer

Gastric juice

Answer

Mucus

Answer

Pepsin

Question 36

Which hormone inhibits gastric secretion and stimulates pancreatic secretion?

Accepted Answer

Secretin

Answer

Gastrin

Answer

Cholecystokinin

Answer

Insulin

Question 37

Which branch of the autonomic nervous system primarily stimulates digestive functions, such as increasing motility and secretion?

Accepted Answer

Parasympathetic

Answer

Sympathetic

Question 38

The primary site of digestion and absorption of nutrients in the human digestive system is:

Accepted Answer

Small intestine

Answer

Esophagus

Answer

Stomach

Answer

Large intestine

Question 39

Which hormone is primarily secreted by the stomach and stimulates the production of gastric juices?

Accepted Answer

Gastrin

Answer

Secretin

Answer

Cholecystokinin

Answer

Insulin

Question 40

Which layer of the stomach wall is responsible for the secretion of digestive enzymes and hydrochloric acid?

Accepted Answer

Mucosa

Answer

Submucosa

Answer

Muscularis externa

Answer

Serosa

Question 41

The small intestine is divided into three sections. Which of the following is NOT one of them?

Accepted Answer

Colon

Answer

Duodenum

Answer

Jejunum

Answer

Ileum

Question 42

The pancreas secretes enzymes that aid in the digestion of all of the following EXCEPT:

Accepted Answer

Minerals

Answer

Carbohydrates

Answer

Lipids

Answer

Proteins

Question 43

Which organ is responsible for the production and storage of bile?

Accepted Answer

Liver

Answer

Gallbladder

Answer

Stomach

Answer

Pancreas

Question 44

Which of the following is a common symptom of gastroesophageal reflux disease (GERD)?

Accepted Answer

Heartburn

Answer

Nausea

Answer

Constipation

Answer

Diarrhea

Question 45

The ileocecal valve is located between which two organs, preventing the backflow of material from the large intestine into the small intestine?

Accepted Answer

Ileum and large intestine

Answer

Duodenum and jejunum

Answer

Jejunum and ileum

Answer

Cecum and ascending colon

Question 46

Which organ is primarily responsible for absorbing nutrients from digested food?

Accepted Answer

Small intestine

Answer

Large intestine

Answer

Stomach

Answer

Esophagus

Question 47

Which hormone stimulates the gallbladder to release bile into the duodenum?

Accepted Answer

Cholecystokinin

Answer

Secretin

Answer

Gastrin

Answer

Insulin

Question 48

Which part of the large intestine is responsible for most water absorption?

Accepted Answer

Colon

Answer

Rectum

Answer

Appendix

Answer

Cecum

Question 49

Which enzyme is secreted by the stomach and is involved in protein digestion?

Accepted Answer

Pepsin

Answer

Sucrase

Answer

Lipase

Answer

Amylase

Question 50

Which type of movement is responsible for propelling food along the digestive tract?

Accepted Answer

Peristalsis

Answer

Osmosis

Answer

Segmentation

Answer

Diffusion

Question 51

Which organ secretes enzymes that aid in fat digestion?

Accepted Answer

Pancreas

Answer

Liver

Answer

Stomach

Answer

Gallbladder

Question 52

Which layer of the digestive tract is lined with cells that absorb nutrients?

Accepted Answer

Mucosa

Answer

Muscularis externa

Answer

Submucosa

Answer

Serosa

Question 53

Which organ removes toxins and waste products from the blood?

Accepted Answer

Liver

Answer

Pancreas

Answer

Kidney

Answer

Spleen

Question 54

Which organ stores and concentrates bile before releasing it into the duodenum?

Accepted Answer

Gallbladder

Answer

Pancreas

Answer

Liver