Question 1

During ________________,the digestive system can absorb whole intact proteins.

Accepted Answer

A) infancy 
B) aging adulthood 
C) adulthood 
D) childhood 
A) infancy 
B) aging adulthood 
C) adulthood 
D) childhood

Question 2

Chewing is an important digestive function because it improves the functionality of:

Accepted Answer

A) enzymes. 
B) hormones. 
C) mucus. 
D) peristalsis. 
A) enzymes. 
B) hormones. 
C) mucus. 
D) peristalsis.

Question 3

The pharynx is a cavity shared by the digestive tract and the:

Accepted Answer

A) urinary tract. 
B) respiratory tract. 
C) pancreatic duct. 
D) common bile duct. 
A) urinary tract. 
B) respiratory tract. 
C) pancreatic duct. 
D) common bile duct.

Question 4

Which of the following structures is located past (beyond)the ileocecal valve?

Accepted Answer

A) Colon 
B) Common bile duct 
C) Stomach 
D) Pharynx 
A) Colon 
B) Common bile duct 
C) Stomach 
D) Pharynx

Question 5

The hormone gastrin is released in response to:

Accepted Answer

A) the presence of food in the stomach. 
B) contraction of the gastroesophageal sphincter. 
C) relaxation of the anal sphincter. 
D) the presence of the bacteria Helicobacter pylori in the stomach. 
A) the presence of food in the stomach. 
B) contraction of the gastroesophageal sphincter. 
C) relaxation of the anal sphincter. 
D) the presence of the bacteria Helicobacter pylori in the stomach.

Question 6

The primary site of nutrient absorption is the:

Accepted Answer

A) liver. 
B) large intestine. 
C) stomach. 
D) small intestine. 
A) liver. 
B) large intestine. 
C) stomach. 
D) small intestine.

Question 7

The absorptive surface of the small intestine is increased by the presence of:

Accepted Answer

A) sphincters. 
B) microvilli. 
C) enterocytes. 
D) gastric pits. 
A) sphincters. 
B) microvilli. 
C) enterocytes. 
D) gastric pits.

Question 8

Explain why a person who consumes toast,fruit and coffee for breakfast is more likely to feel hunger sooner compared to a person who eats an egg and fried potatoes for breakfast.

Accepted Answer

There are several factors that influence

Question 9

Metabolic reactions that build molecules and body structures are referred to as:

Accepted Answer

A) catabolic. 
B) anabolic. 
C) hydrolytic. 
D) deamination reactions. 
A) catabolic. 
B) anabolic. 
C) hydrolytic. 
D) deamination reactions.

Question 10

After water soluble nutrients are absorbed in the intestine,they are carried to the __________ via the ___________.

Accepted Answer

A) kidneys; capillaries 
B) liver; hepatic portal vein 
C) gall bladder; bile duct 
D) pancreas; lacteals 
A) kidneys; capillaries 
B) liver; hepatic portal vein 
C) gall bladder; bile duct 
D) pancreas; lacteals

Question 11

Which nutrient(s)are absorbed into the lymphatic system before entering the blood?

Accepted Answer

A) Fat 
B) Water 
C) Water-soluble vitamins 
D) Glucose 
A) Fat 
B) Water 
C) Water-soluble vitamins 
D) Glucose

Question 12

Chyme is neutralized in the small intestine by secretions from the:

Accepted Answer

A) gallbladder. 
B) kidneys. 
C) liver. 
D) pancreas. 
A) gallbladder. 
B) kidneys. 
C) liver. 
D) pancreas.

Question 13

The stomach wall is protected from the acidity of the gastric juice by:

Accepted Answer

A) the bacterium Helicobacter pylori. 
B) a viscous mucus layer. 
C) the action of gastrin. 
D) pancreatic secretions. 
A) the bacterium Helicobacter pylori. 
B) a viscous mucus layer. 
C) the action of gastrin. 
D) pancreatic secretions.

Question 14

The urinary and respiratory systems help the body to remove:

Accepted Answer

A) unabsorbed food residue. 
B) metabolic waste products. 
C) excess calories. 
D) All of these choices are correct. 
A) unabsorbed food residue. 
B) metabolic waste products. 
C) excess calories. 
D) All of these choices are correct.

Question 15

Which organ filters metabolic waste products out of the blood?

Accepted Answer

A) Kidneys 
B) Small intestine 
C) Pancreas 
D) Spleen 
A) Kidneys 
B) Small intestine 
C) Pancreas 
D) Spleen

Question 16

Which of the following digestive organs is lined with fingerlike projections called villi?

Accepted Answer

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

Question 17

Which of the following is NOT true of the stomach?

Accepted Answer

A) It produces pepsinogen. 
B) Parietal cells in gastric pits produce hydrochloric acid. 
C) The main function is absorption. 
D) It has 3 layers of smooth muscle. 
A) It produces pepsinogen. 
B) Parietal cells in gastric pits produce hydrochloric acid. 
C) The main function is absorption. 
D) It has 3 layers of smooth muscle.

Question 18

Which of the following is NOT an accessory organ of the digestive system?

Accepted Answer

A) Liver 
B) Pancreas 
C) Salivary glands 
D) Kidney 
A) Liver 
B) Pancreas 
C) Salivary glands 
D) Kidney

Question 19

The release of bile and pancreatic enzymes into the small intestine is controlled by:

Accepted Answer

A) secretin and CCK. 
B) stimulation of stretch receptors in the stomach. 
C) gastrin. 
D) salivary amylase. 
A) secretin and CCK. 
B) stimulation of stretch receptors in the stomach. 
C) gastrin. 
D) salivary amylase.

Question 20

The function of sphincters in the digestive tract is:

Accepted Answer

A) to coordinate muscular contractions that propel food forward. 
B) to regulate the flow of food. 
C) to control the release of bile. 
D) to regulate enzymatic reactions. 
A) to coordinate muscular contractions that propel food forward. 
B) to regulate the flow of food. 
C) to control the release of bile. 
D) to regulate enzymatic reactions.

Exam 3: Digestion, Absorption, and Metabolism

During ________________,the digestive system can absorb whole intact proteins.

Chewing is an important digestive function because it improves the functionality of:

The pharynx is a cavity shared by the digestive tract and the:

Which of the following structures is located past (beyond)the ileocecal valve?

The hormone gastrin is released in response to:

The primary site of nutrient absorption is the:

The absorptive surface of the small intestine is increased by the presence of:

Explain why a person who consumes toast,fruit and coffee for breakfast is more likely to feel hunger sooner compared to a person who eats an egg and fried potatoes for breakfast.

Metabolic reactions that build molecules and body structures are referred to as:

After water soluble nutrients are absorbed in the intestine,they are carried to the __________ via the ___________.

Which nutrient(s)are absorbed into the lymphatic system before entering the blood?

Chyme is neutralized in the small intestine by secretions from the:

The stomach wall is protected from the acidity of the gastric juice by:

The urinary and respiratory systems help the body to remove:

Which organ filters metabolic waste products out of the blood?

Which of the following digestive organs is lined with fingerlike projections called villi?

Which of the following is NOT true of the stomach?

Which of the following is NOT an accessory organ of the digestive system?

The release of bile and pancreatic enzymes into the small intestine is controlled by:

The function of sphincters in the digestive tract is:

Nutrition: Food for Health

Carbohydrates: Sugars, Starches, and Fibre

Lipids

Proteins and Amino Acids

Energy Balance and Weight Management

The Water-Soluble Vitamins

The Fat-Soluble Vitamins

Water and the Electrolytes

Major Minerals and Bone Health

The Trace Elements

Nutrition and Physical Activity

Nutrition During Pregnancy and Lactation

Nutrition From Infancy to Adolescence

Nutrition and Aging: the Adult Years

Food Safety

World Hunger and Malnutrition

Focus On Alcohol

Focus on Biotechnology

Focus On Eating Disorders

Focus On Phytochemicals

Focus on Supplements

Filters

After water soluble nutrients are absorbed in the intestine,they are carried to the via the _.