01
True or false
1 point
The enteric nervous system can coordinate local motility and secretion in the gut, while autonomic input modifies its activity. True or false?
Free Practice Quiz Question List
7 Digestive System Physiology Online Quiz Questions
Use this free practice quiz with 20 questions to review 7 Digestive System Physiology, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
Bile is an enzyme that chemically digests fats. True or false?
- A
True
- B
False
03
Choose one
1 point
A person chews food thoroughly before swallowing. Which description best explains the digestive effect of chewing?
- A
It is chemical digestion because it hydrolyzes starch.
- B
It is mechanical processing because it breaks food apart and increases surface area.
- C
It is absorption because food particles cross into the blood.
- D
It is motility because it propels chyme into the duodenum.
04
Choose one
1 point
Acidic chyme enters the duodenum. Which pancreatic secretion helps make the intestinal environment suitable for digestive enzymes?
- A
It emulsifies fats so they can enter the lymphatic lacteals.
- B
It begins protein digestion in the stomach.
- C
It neutralizes acidic chyme and creates conditions suitable for intestinal enzymes.
- D
It absorbs remaining water and electrolytes from the chyme.
05
Choose one
1 point
Which function of the large intestine reclaims water and electrolytes that remain in gut contents?
- A
It reclaims much of the water and electrolytes remaining in gut contents.
- B
It absorbs most dietary fats into blood capillaries.
- C
It produces bile salts that emulsify fats.
- D
It completes most chemical digestion of proteins.
06
Choose one
1 point
After nutrients enter the small intestine, a hormone helps slow gastric activity and stimulates insulin release. Which hormone is it?
- A
Gastrin, which promotes gastric acid secretion.
- B
GIP, which helps slow gastric activity and stimulates insulin release.
- C
Secretin, which stimulates pancreatic bicarbonate secretion in response to acidic chyme.
- D
Glucagon, which promotes the release of stored fuels between meals.
07
Choose all
1 point
Select all statements that correctly describe the absorption and transport of most dietary fats.
- A
Most dietary fats are reassembled and packaged into chylomicrons inside intestinal cells.
- B
Most dietary fats travel first from intestinal capillaries to the liver through the hepatic portal vein.
- C
Chylomicrons pass into lymphatic lacteals before reaching the bloodstream.
- D
Many fat-soluble vitamins travel with dietary fats.
08
Choose all
1 point
Select all statements that correctly describe digestive movements and their functions.
- A
Peristalsis propels contents through the intestines.
- B
Segmentation mixes small-intestinal contents with secretions.
- C
Segmentation is the process that absorbs most remaining water in the large intestine.
- D
Colon contractions move and compact residue before defecation.
09
Written response
1 point
What is the name of the vein that carries nutrient-rich blood from the intestines to the liver?
10
Written response
1 point
What is the name of the small-intestinal movement pattern that repeatedly mixes contents with secretions and brings them into contact with the absorptive surface?
11
Fill in the blank
1 point
Acidic chyme in the duodenum triggers release of , which stimulates pancreatic bicarbonate secretion.
12
Fill in the blank
1 point
promotes gastric acid secretion.
13
Open ended
1 point
Explain why the stomach releases chyme gradually into the duodenum rather than emptying its contents all at once.
14
Choose one
1 point
Which statement best describes bile's role in digestion?
- A
Bile is an enzyme that hydrolyzes triglycerides.
- B
Bile salts emulsify fats, helping their digestion and absorption.
- C
Bile neutralizes acidic chyme by supplying bicarbonate.
- D
Bile begins the chemical digestion of starch.
15
True or false
1 point
True or false: In the small intestine, segmentation primarily propels contents forward, while peristalsis repeatedly mixes them with secretions.
- A
True
- B
False
16
Choose one
1 point
Why does the stomach release chyme gradually into the duodenum?
- A
It prevents the stomach from churning food.
- B
It allows the large intestine to begin digesting proteins.
- C
It gives the small intestine time to neutralize acid, digest food, and absorb nutrients.
- D
It directs all chyme immediately into the large intestine.
17
Choose one
1 point
Acidic chyme enters the small intestine. Which pancreatic response both helps establish suitable conditions for intestinal enzymes and contributes to digestion?
- A
Pancreatic bicarbonate helps neutralize acidic chyme, while pancreatic enzymes digest food molecules.
- B
Pancreatic bile salts neutralize acid and hydrolyze proteins.
- C
Pancreatic mucus absorbs nutrients into the hepatic portal vein.
- D
Pancreatic hydrochloric acid activates brush-border enzymes.
18
Choose one
1 point
Which comparison correctly describes the initial transport routes of absorbed sugars and most dietary fats?
- A
Sugars enter lymphatic lacteals, while most dietary fats enter portal blood directly.
- B
Both sugars and most dietary fats enter portal blood directly.
- C
Both sugars and most dietary fats enter lymphatic lacteals before reaching the bloodstream.
- D
Sugars and amino acids commonly enter portal blood, while most dietary fats enter lymph through lacteals.
19
Written response
1 point
Which hormone is released in response to acidic chyme in the duodenum and stimulates pancreatic bicarbonate secretion?
20
Written response
1 point
Through which vein do many absorbed sugars and amino acids travel first from the gut to the liver?