Digestive System Questions

Objective Questions

Which of the following are functions of the gallbladder?

A) Secretion of cholecystokinin B) Secretion of gastrin C) Storage and modification of bile D) Breakdown of erythrocytes

Correct Answer: C) Storage and modification of bile

Which of the following is an accessory digestive organ?

A) Pharynx B) Esophagus C) Large intestine D) Pancreas

Correct Answer: D) Pancreas

In which of the following organs does mechanical digestion occur?

A) Stomach B) Small intestine C) Esophagus D) Mouth

Correct Answer: D) Mouth

Which of the following is the first part of the large intestine?

A) Cecum B) Colon C) Appendix D) Rectum

Correct Answer: A) Cecum

Which of the following organs produces bile?

A) Liver B) Gallbladder C) Pancreas D) Spleen

Correct Answer: A) Liver

The adherent mucoid alkaline substance covering the inner lining of the stomach is to:

A) Digest starch B) Act against bacteria C) Prevent the action of pepsin on mucosa D) Prevent viral infection

Correct Answer: C) Prevent the action of pepsin on mucosa

The organs constantly in touch with the liver are:

A) Pancreas, colon, and caecum B) Duodenum and stomach C) Ileum, stomach, and colon D) Stomach and gall bladder

Correct Answer: B) Duodenum and stomach

Digestion begins in the mouth. Which of the following statements is INCORRECT?

A) The tongue helps absorb nutrients B) The saliva helps break down food C) The tongue keeps food in place in the mouth while the food is being chewed D) Teeth help chew food into smaller pieces

Correct Answer: A) The tongue helps absorb nutrients

Which of the following best describes the role of the esophagus in the digestive system?

A) Mucus is secreted to protect the stomach B) Sends food from the mouth to the stomach C) Helps absorb nutrients D) Breaks down food to be absorbed into the bloodstream

Correct Answer: B) Sends food from the mouth to the stomach

Which of the following organs help break down food in the small intestines?

A) Liver, kidneys, stomach B) Mouth, esophagus, stomach C) Liver, pancreas, gall bladder D) Stomach, small intestines

Correct Answer: C) Liver, pancreas, gall bladder

Diarrhea is when the __________ do not absorb water:

A) Rectum B) Anus C) Stomach D) Large intestines

Correct Answer: D) Large intestines

The process of food digestion in mammals would:

A) Make energy immediately available to the body B) Promote growth and repair of tissues C) Provide sufficient food materials within the body D) Render food substances soluble and absorbable

Correct Answer: D) Render food substances soluble and absorbable

Which of these is not an enzyme?

A) Pepsin B) Gastrin C) Amylase D) Trypsin

Correct Answer: B) Gastrin

Which one of the following does not secrete any digestive enzyme?

A) Liver B) Salivary gland C) Glands of small intestine D) Pancreas

Correct Answer: A) Liver

The part of the human gut that has an acidic content is the?

A) Stomach B) Duodenum C) Ileum D) Colon

Correct Answer: A) Stomach

The villus in the small intestine is significant because it?

A) Increases the surface area for absorption B) Increases the surface area for digestion C) Assists in mixing digested food D) Assists in filtering undigested food

Correct Answer: A) Increases the surface area for absorption

The blood vessel which carries blood from the alimentary canal to the liver is the?

A) Hepatic artery B) Hepatic vein C) Hepatic portal vein D) Mesenteric artery

Correct Answer: C) Hepatic portal vein

In mammals, the digestion of starch starts in the

A) Stomach B) Small intestine C) Mouth D) Liver

Correct Answer: C) Mouth

Partially digested food ready to leave the stomach is referred to as

A) Chyme B) Curd C) Glycogen D) Paste

Correct Answer: A) Chyme

The mammalian organ which acts both as a digestive and as an endocrine organ is the

A) Oesophagus B) Liver C) Pancreas D) Spleen

Correct Answer: C) Pancreas

Theory Questions

State two ways in which villi are adapted for the absorption of soluble foods

An individual ate a hot and large meal of cassava with salty groundnut soup. The individual was sweating profusely and did not drink water after the meal.

State one role each played by the following organs involved in the activity involved

Mouth
Skin
Tongue
Kidney
Stomach
Small Intestine
Large Intestine
Liver

Name three of the organs listed in 2a that contain enzymes needed to break down the food
Name three digestive enzymes that could be involved in the digestion of the meal
Name two end products of the meal after digestion

State one effect that the excess salt in the meal might have on the individual.
State three advantages that the individual would derive from the meal.

What is the role of bile in fat digestion?

Distinguish between mechanical and chemical digestion

What is the role of peristalsis in the digestive system?