Question 1

Which of the following is the most accurate statement regarding the ingestion of two tablets of Rolaids?

Accepted Answer

A) The fluid in the stomach would begin reabsorbing. 
B) The HCl production would decrease. 
C) The pH of the stomach fluid would decrease. 
D) The pH of the stomach fluid would increase. 
A) The fluid in the stomach would begin reabsorbing. 
B) The HCl production would decrease. 
C) The pH of the stomach fluid would decrease. 
D) The pH of the stomach fluid would increase.

Question 2

Which of these animals has a gastrointestinal tract?

Accepted Answer

A) sponge 
B) hydra 
C) flatworm 
D) earthworm 
E) salamander 
A) sponge 
B) hydra 
C) flatworm 
D) earthworm 
E) salamander

Question 3

From the list given below,which are the animals that practice coprophagy,a process in which feces are consumed to assure digestion by symbiotic organisms?
I-horses
II-rodents
III-rabbits and hares
IV-deer

Accepted Answer

A) I and II 
B) III 
C) I and IV 
D) II 
E) I,II,and III 
A) I and II 
B) III 
C) I and IV 
D) II 
E) I,II,and III

Question 4

Which digestive hormone inhibits stomach emptying?

Accepted Answer

A) gastrin 
B) cholycystokinin 
C) gastric inhibitory peptide 
D) secretin 
A) gastrin 
B) cholycystokinin 
C) gastric inhibitory peptide 
D) secretin

Question 5

After not eating for 3 days,which of the following is likely to occur?

Accepted Answer

A) Insulin levels will be high. 
B) Glycogen reserves will be high. 
C) Glucagon levels will be high. 
D) Blood glucose will be high. 
E) The pancreas will become inactivE. 
A) Insulin levels will be high. 
B) Glycogen reserves will be high. 
C) Glucagon levels will be high. 
D) Blood glucose will be high. 
E) The pancreas will become inactivE.

Question 6

The process in which amino acids and lactic acid are converted to glucose is known as

Accepted Answer

A) aminolactogenesis. 
B) glycolysis. 
C) Krebs cycle. 
D) gluconeogenesis. 
E) cellular respiration. 
A) aminolactogenesis. 
B) glycolysis. 
C) Krebs cycle. 
D) gluconeogenesis. 
E) cellular respiration.

Question 7

In humans,and other vertebrates,the digestive system consists of

Accepted Answer

A) a one-way tube with a separate mouth and anus and accessory organs. 
B) a two-way tube with a separate mouth and anus. 
C) a tube with a single opening that serves as mouth and anus. 
D) a two-way tube with a separate mouth and anus and accessory organs. 
E) a one-way tube with a separate mouth and anus and no accessory organs. 
A) a one-way tube with a separate mouth and anus and accessory organs. 
B) a two-way tube with a separate mouth and anus. 
C) a tube with a single opening that serves as mouth and anus. 
D) a two-way tube with a separate mouth and anus and accessory organs. 
E) a one-way tube with a separate mouth and anus and no accessory organs.

Question 8

The epithelial wall of the small intestine is covered with tiny,finger-like projections called

Accepted Answer

A) ciliA. 
B) flagella. 
C) villi. 
D) micovilli. 
E) plexuses. 
A) ciliA. 
B) flagella. 
C) villi. 
D) micovilli. 
E) plexuses.

Question 9

Rumen of the first stomach of ruminants serves as a fermentation chamber in which bacteria and protozoa degrade

Accepted Answer

A) protein. 
B) fats. 
C) cellulose. 
D) glucose. 
E) starch. 
A) protein. 
B) fats. 
C) cellulose. 
D) glucose. 
E) starch.

Question 10

Gizzards designed to grind food are found in

Accepted Answer

A) mammals. 
B) insects. 
C) birds. 
D) marsupials. 
E) monotrenes. 
A) mammals. 
B) insects. 
C) birds. 
D) marsupials. 
E) monotrenes.

Question 11

The teeth of an adult human are arranged in the following fashion.(Note: The orientation is front and moving right along the bottom jaw. )

Accepted Answer

A) incisors,molars,canines,premolars 
B) incisors,canines,molars,premolars 
C) incisors,canines,premolars,molars 
D) incisors,premolars,molars,canines 
E) canines,incisors,premolars,molars 
A) incisors,molars,canines,premolars 
B) incisors,canines,molars,premolars 
C) incisors,canines,premolars,molars 
D) incisors,premolars,molars,canines 
E) canines,incisors,premolars,molars

Question 12

The villi and microvilli on the surface of the small intestine

Accepted Answer

A) secrete bicarbonate. 
B) enable the small intestine to stretch. 
C) increase the absorptive surface. 
D) produce bile salts. 
E) help break the food into smaller particles. 
A) secrete bicarbonate. 
B) enable the small intestine to stretch. 
C) increase the absorptive surface. 
D) produce bile salts. 
E) help break the food into smaller particles.

Question 13

The first organ to receive the products of digestion after absorption is the

Accepted Answer

A) duodenum. 
B) pancreas. 
C) liver. 
D) gallbladder. 
E) colon. 
A) duodenum. 
B) pancreas. 
C) liver. 
D) gallbladder. 
E) colon.

Question 14

In humans,the surface area of the small intestine is

Accepted Answer

A) 100 square meters. 
B) 200 square meters. 
C) 300 square meters. 
D) 400 square meters. 
E) 500 square meters. 
A) 100 square meters. 
B) 200 square meters. 
C) 300 square meters. 
D) 400 square meters. 
E) 500 square meters.

Question 15

Excess blood glucose is removed by the liver to convert it into

Accepted Answer

A) cellulose. 
B) maltose and other disaccharides. 
C) starch. 
D) glycogen. 
E) all of thesE. 
A) cellulose. 
B) maltose and other disaccharides. 
C) starch. 
D) glycogen. 
E) all of thesE.

Question 16

Which digestive hormone stimulates gall bladder contraction?

Accepted Answer

A) gastrin 
B) cholycystokinin 
C) gastric inhibitory peptide 
D) secretin 
A) gastrin 
B) cholycystokinin 
C) gastric inhibitory peptide 
D) secretin

Question 17

The rhythmic contractions of the esophagus are called

Accepted Answer

A) esophageal contractions. 
B) esophageal convulsions. 
C) peristalsis. 
D) heartburn sensations. 
E) mastication. 
A) esophageal contractions. 
B) esophageal convulsions. 
C) peristalsis. 
D) heartburn sensations. 
E) mastication.

Question 18

In horses,rodents,and lagomorphs,the digestion of cellulose by microorganisms takes place in the

Accepted Answer

A) duodenum. 
B) reticulum. 
C) cecum. 
D) omasum. 
E) abomasum. 
A) duodenum. 
B) reticulum. 
C) cecum. 
D) omasum. 
E) abomasum.

Question 19

In the human digestive system,the stomach produces about 2 liters of HCl and other gastric secretions every day.The acid secretion of the stomach

Accepted Answer

A) is stimulated by the release of gastrin. 
B) promotes a high pH. 
C) inhibits pepsin activity. 
D) begins the process of starch digestion. 
E) stimulates the gallbladder to contract. 
A) is stimulated by the release of gastrin. 
B) promotes a high pH. 
C) inhibits pepsin activity. 
D) begins the process of starch digestion. 
E) stimulates the gallbladder to contract.

Question 20

According to the diagram,which one of the following processes would occur the most after eating a meal of french fries and ice cream?

Accepted Answer

A) II 
B) I 
C) III 
D) II and III equally 
E) I and II equally 
A) II 
B) I 
C) III 
D) II and III equally 
E) I and II equally

Exam 48: The Digestive System

Which of the following is the most accurate statement regarding the ingestion of two tablets of Rolaids?

Which of these animals has a gastrointestinal tract?

From the list given below,which are the animals that practice coprophagy,a process in which feces are consumed to assure digestion by symbiotic organisms? I-horses II-rodents III-rabbits and hares IV-deer

Which digestive hormone inhibits stomach emptying?

After not eating for 3 days,which of the following is likely to occur?

The process in which amino acids and lactic acid are converted to glucose is known as

In humans,and other vertebrates,the digestive system consists of

The epithelial wall of the small intestine is covered with tiny,finger-like projections called

Rumen of the first stomach of ruminants serves as a fermentation chamber in which bacteria and protozoa degrade

Gizzards designed to grind food are found in

The teeth of an adult human are arranged in the following fashion.(Note: The orientation is front and moving right along the bottom jaw. )

The villi and microvilli on the surface of the small intestine

The first organ to receive the products of digestion after absorption is the

In humans,the surface area of the small intestine is

Excess blood glucose is removed by the liver to convert it into

Which digestive hormone stimulates gall bladder contraction?

The rhythmic contractions of the esophagus are called

In horses,rodents,and lagomorphs,the digestion of cellulose by microorganisms takes place in the

In the human digestive system,the stomach produces about 2 liters of HCl and other gastric secretions every day.The acid secretion of the stomach

According to the diagram,which one of the following processes would occur the most after eating a meal of french fries and ice cream?

The Science of Biology

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