Question 1

major digestive work in the stomach is the initial breakdown of:

Accepted Answer

A) starch. 
B) proteins. 
C) fat. 
D) vitamins. 
A) starch. 
B) proteins. 
C) fat. 
D) vitamins.

Question 2

major digestive enzyme secreted by the stomach is:

Accepted Answer

A) amylase. 
B) lipase. 
C) pepsin. 
D) disaccharidase. 
A) amylase. 
B) lipase. 
C) pepsin. 
D) disaccharidase.

Question 3

Which of the following contains no digestive enzymes?

Accepted Answer

A) saliva 
B) gastric juice 
C) intestinal juice 
D) bile 
A) saliva 
B) gastric juice 
C) intestinal juice 
D) bile

Question 4

Villi are part of the structure of the:

Accepted Answer

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

Question 5

Leftovers should be used within _____ days.

Accepted Answer

A) 5-7 
B) 3-4 
C) 2-3 
D) 1-2 
A) 5-7 
B) 3-4 
C) 2-3 
D) 1-2

Question 6

present in the GI tract:

Accepted Answer

A) slow down the process of digestion and absorption. 
B) cause difficulty in digestion. 
C) stimulate and hasten digestion and absorption. 
D) are carriers of thiamin, riboflavin, and niacin. 
A) slow down the process of digestion and absorption. 
B) cause difficulty in digestion. 
C) stimulate and hasten digestion and absorption. 
D) are carriers of thiamin, riboflavin, and niacin.

Question 7

Enzymes:

Accepted Answer

A) facilitate chemical reactions. 
B) draw water into the small intestine. 
C) are present in all parts of the GI tract. 
D) encourage bacterial growth. 
A) facilitate chemical reactions. 
B) draw water into the small intestine. 
C) are present in all parts of the GI tract. 
D) encourage bacterial growth.

Question 8

Drinking plenty of water in conjunction with eating foods high in fiber supplies fluid for the fiber to take up, thus relieving constipation.

Accepted Answer

A) True 
 B)False

Question 9

The mouth initiates the liquefying process to reduce the food to a coarse mash suitable for swallowing.

Accepted Answer

A) True 
 B)False

Question 10

digestive tract begins at the ____ and ends at the ____.

Accepted Answer

A) stomach; large intestine 
B) pharynx; rectum 
C) lower esophageal sphincter; rectum 
D) mouth; anus 
A) stomach; large intestine 
B) pharynx; rectum 
C) lower esophageal sphincter; rectum 
D) mouth; anus

Question 11

After absorption, the larger fats and fat-soluble vitamins are first released into the _____ transport system.

Accepted Answer

A) excretory 
B) mesentery 
C) vascular 
D) lymphatic 
A) excretory 
B) mesentery 
C) vascular 
D) lymphatic

Question 12

primary site of nutrient absorption is the:

Accepted Answer

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

Question 13

Elevated HDL concentrations are associated with a low risk of heart disease because they:

Accepted Answer

A) transport newly absorbed lipids from intestinal cells to the rest of the body. 
B) carry cholesterol and triglycerides from the liver to the rest of the body. 
C) carry lipids around in the blood more than LDL. 
D) take excess cholesterol and phospholipids from the tissues and return them to the liver. 
A) transport newly absorbed lipids from intestinal cells to the rest of the body. 
B) carry cholesterol and triglycerides from the liver to the rest of the body. 
C) carry lipids around in the blood more than LDL. 
D) take excess cholesterol and phospholipids from the tissues and return them to the liver.

Question 14

Which of the following factors is not instrumental to the optimal health and performance of the digestive system?

Accepted Answer

A) adequate sleep 
B) enzyme supplements 
C) mental state 
D) nutrition 
A) adequate sleep 
B) enzyme supplements 
C) mental state 
D) nutrition

Question 15

emulsification of fat requires:

Accepted Answer

A) bile. 
B) enzymes. 
C) prostaglandins. 
D) intestinal flora. 
A) bile. 
B) enzymes. 
C) prostaglandins. 
D) intestinal flora.

Question 16

Which specific enzyme breaks down starch in the mouth?

Accepted Answer

A) carbohydrase 
B) lipase 
C) salivary amylase 
D) gastric protease 
A) carbohydrase 
B) lipase 
C) salivary amylase 
D) gastric protease

Question 17

Some partially digested nutrients can be caught in the microvilli, but they cannot be further digested.

Accepted Answer

A) True 
 B)False

Question 18

Another name for the digestive tract is the:

Accepted Answer

A) urinary tract. 
B) exocrine system. 
C) gastrointestinal system. 
D) muscular system. 
A) urinary tract. 
B) exocrine system. 
C) gastrointestinal system. 
D) muscular system.

Question 19

addition to hydrochloric acid, the stomach cells also secrete:

Accepted Answer

A) mucus. 
B) bile. 
C) amylase. 
D) lipoproteins. 
A) mucus. 
B) bile. 
C) amylase. 
D) lipoproteins.

Question 20

movement of chyme from the stomach into the small intestine is regulated by the:

Accepted Answer

A) pancreas. 
B) pyloric sphincter. 
C) ileocecal valve. 
D) duodenum. 
A) pancreas. 
B) pyloric sphincter. 
C) ileocecal valve. 
D) duodenum.

Exam 5: Digestion and Absorption

major digestive work in the stomach is the initial breakdown of:

major digestive enzyme secreted by the stomach is:

Which of the following contains no digestive enzymes?

Villi are part of the structure of the:

Leftovers should be used within _____ days.

present in the GI tract:

Enzymes:

Drinking plenty of water in conjunction with eating foods high in fiber supplies fluid for the fiber to take up, thus relieving constipation.

The mouth initiates the liquefying process to reduce the food to a coarse mash suitable for swallowing.

digestive tract begins at the ____ and ends at the ____.

After absorption, the larger fats and fat-soluble vitamins are first released into the _____ transport system.

primary site of nutrient absorption is the:

Elevated HDL concentrations are associated with a low risk of heart disease because they:

Which of the following factors is not instrumental to the optimal health and performance of the digestive system?

emulsification of fat requires:

Which specific enzyme breaks down starch in the mouth?

Some partially digested nutrients can be caught in the microvilli, but they cannot be further digested.

Another name for the digestive tract is the:

addition to hydrochloric acid, the stomach cells also secrete:

movement of chyme from the stomach into the small intestine is regulated by the:

Overview of Nutrition and Health

Carbohydrates

Lipids

Protein

Metabolism, Energy Balance, and Body Composition

Weight Management: Overweight and Underweight

The Vitamins

Water and the Minerals

Fitness and Nutrition

Nutrition Through the Life Span: Pregnancy and Lactation

Nutrition Through the Life Span: Infancy, Childhood, and Adolescence

Nutrition Through the Life Span: Later Adulthood

Illness and Nutrition Care

Medications, Diet-Drug Interactions, and Herbal Supplements

Specialized Nutrition Support: Enteral and Parenteral Nutrition

Foods and Food Consistency for Upper Gi Disorders

Fiber-Modified Diets for Lower Gastrointestinal Tract Disorders

Carbohydrate- and Fat-Modified Diets for Malabsorption Disorders

Nutrition Therapy for Liver and Gallbladder Diseases

Carbohydrate-Controlled Diets for Diabetes Mellitus

Fat-Controlled, Mineral-Modified Diets for Cardiovascular Diseases

Protein-, Mineral-, and Fluid-Modified Diets for Kidney Diseases

Energy- and Protein-Modified Diets for Metabolic and Respiratory Stress

Energy- and Protein-Modified Diets for Cancer and Hiv Infection

Filters

digestive tract begins at the and ends at the .