Free Practice Quiz Question List

8 The Digestive System Online Quiz Questions

Use this free practice quiz with 20 questions to review 8 The Digestive System, test your knowledge, and prepare for your next test or exam.

20 questions

True or false

1 point

True or false: Food travels through the liver as it moves along the digestive tract.

A
True
B
False

Choose one

1 point

After a swallowed bolus enters the esophagus, which process propels it toward the stomach?

A
Peristalsis
B
Mixing contractions
C
Bile release
D
Nutrient absorption

Fill in the blank

1 point

After the stomach churns food with gastric juice, the resulting semi-liquid mixture is called .

Written response

1 point

Which nutrient class begins digestion in the mouth and continues to be digested in the small intestine?

Choose one

1 point

What is bile's main contribution to fat digestion?

A
It chemically digests fat into amino acids.
B
It converts acidic chyme into glucose.
C
It disperses large fat droplets into smaller ones.
D
It absorbs fat directly into the colon.

Choose all

1 point

Select all the examples of mechanical digestion.

A
Chewing food into smaller pieces
B
Churning food in the stomach
C
Mixing intestinal contents with digestive juices
D
Breaking large molecules down using enzymes
E
Moving digested nutrients into blood or lymph

Written response

1 point

What digestive-process term describes the movement of digested nutrients, water, and electrolytes from the tract into blood or lymph?

Fill in the blank

1 point

Before material leaves the body through the anus, the rectum stores .

Choose one

1 point

The small intestine has folds, villi, and microvilli. How does this structure help it perform its main digestive role?

A
They slow food in the esophagus so it can enter the stomach.
B
They provide a large surface area for absorption.
C
They store bile until it is needed.
D
They prevent water from entering the large intestine.

True or false

1 point

True or false: Stretching of the rectum as stool enters helps trigger the defecation reflex.

A
True
B
False

Choose all

1 point

Select all the statements that correctly describe how absorbed nutrients are transported.

A
Most sugars and amino acids enter blood vessels in the intestinal wall.
B
Blood from much of the digestive tract carries absorbed nutrients first to the liver.
C
All absorbed nutrients enter lymph before reaching the bloodstream.
D
Many products of fat digestion pass into lymphatic vessels before reaching the bloodstream.

Choose one

1 point

Acidic chyme enters the small intestine from the stomach. Which organ supplies bicarbonate-rich fluid that helps neutralize it?

A
The liver, because it stores acidic chyme
B
The gallbladder, because it produces bicarbonate
C
The salivary glands, because they release fluid into the stomach
D
The pancreas, because it sends bicarbonate-rich fluid into the small intestine

Open ended

1 point

Explain how peristalsis differs from mixing contractions in the digestive tract.

True or false

1 point

True or false: Gut microbes act on some material that remains undigested when it reaches the large intestine.

A
True
B
False

Choose one

1 point

A person chews a piece of bread. Where does enzymatic digestion of its starch begin?

A
Stomach
B
Large intestine
C
Mouth
D
Rectum

Choose one

1 point

Which statement correctly distinguishes peristalsis from mixing contractions in the digestive tract?

A
Peristalsis propels contents forward; mixing contractions expose them to digestive juices and the absorptive surface.
B
Peristalsis absorbs nutrients into blood; mixing contractions store bile.
C
Peristalsis produces bile; mixing contractions neutralize acidic chyme.
D
Peristalsis eliminates stool; mixing contractions carry nutrients to the liver.

Choose one

1 point

Which accessory organ stores and concentrates bile before releasing it into the small intestine?

A
The liver
B
The pancreas
C
The gallbladder
D
The salivary glands

Choose one

1 point

Which process is an example of mechanical digestion?

A
Stomach churning that mixes food
B
Enzymes breaking proteins into smaller units
C
Sugars crossing the intestinal lining into blood
D
Water being absorbed from the remaining contents in the large intestine

Written response

1 point

What is the name for the wave-like muscular contractions that propel contents through the digestive tract?

Written response

1 point

What are the lymphatic vessels in the intestine called that receive many products of fat digestion?