Chapter 03


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Chapter 03

  1. 1. Wardlaw’s Contemporary Nutrition, Seventh Edition Copyright © The McGraw-Hill Companies, InC) Permission required for reproduction or display. Gordon M. Wardlaw Anne M. Smith Chapter 3
  2. 2. Question 1 <ul><li>Bone, cartilage, muscle, and nerves are considered </li></ul><ul><li>A. organs. </li></ul><ul><li>B. organ systems. </li></ul><ul><li>C. tissues. </li></ul><ul><li>D. organisms. </li></ul>
  3. 3. Question 2 <ul><li>Which of the following act as a code book for synthesizing specific proteins required to perform specific body tasks? </li></ul><ul><li>A. RNA </li></ul><ul><li>B. Cells </li></ul><ul><li>C. Organs </li></ul><ul><li>D. DNA </li></ul>
  4. 4. Question 3 <ul><li>To which body part does blood travel to pick up oxygen and release carbon dioxide? </li></ul><ul><li>A. Heart </li></ul><ul><li>B. Lungs </li></ul><ul><li>C. Liver </li></ul><ul><li>D. Kidneys </li></ul>
  5. 5. Question 4 <ul><li>What structure prevents food from entering the trachea when you swallow? </li></ul><ul><li>A. Epiglottis </li></ul><ul><li>B. Tongue </li></ul><ul><li>C. Tonsils </li></ul><ul><li>D. Esophagus </li></ul>
  6. 6. Question 5 <ul><li>Which large blood vessel is the first to receive most recently eaten nutrients, transporting them to the liver? </li></ul><ul><li>A. Portal vein </li></ul><ul><li>B. Mesenteric vein </li></ul><ul><li>C. Subclavian vein </li></ul><ul><li>D. Hepatic vein </li></ul>
  7. 7. Question 6 <ul><li>Blood leaving the intestine goes by way of a vein to the </li></ul><ul><li>A. kidneys. </li></ul><ul><li>B. heart. </li></ul><ul><li>C. liver. </li></ul><ul><li>D. pancreas. </li></ul>
  8. 8. Question 7 <ul><li>After digestion and absorption, which circulatory system carries fat and fat-soluble vitamins? </li></ul><ul><li>A. Portal </li></ul><ul><li>B. Enterohepatic </li></ul><ul><li>C. Lymphatic </li></ul><ul><li>D. Mesentery </li></ul>
  9. 9. Question 8 <ul><li>Which of the following is a feature of the lymphatic system? </li></ul><ul><li>A. It is composed of a mucus-like substance. </li></ul><ul><li>B. It picks up and transports dietary lipid. </li></ul><ul><li>C. It serves to transport fat- and water-soluble vitamins to the heart. </li></ul><ul><li>D. It funnels nutrients to the liver via a one-way pump. </li></ul>
  10. 10. Question 9 <ul><li>Which of the following is true about the lymphatic system? </li></ul><ul><li>A. The specialized fluid carried by this system is blood. </li></ul><ul><li>B. This system never intersects with the bloodstream. </li></ul><ul><li>C. It is not involved in the transport of nutrients. </li></ul><ul><li>D. It is important for transporting fat-soluble nutrients. </li></ul>
  11. 11. Question 10 <ul><li>Where does digestion begin? </li></ul><ul><li>A. Mouth </li></ul><ul><li>B. Stomach </li></ul><ul><li>C. Esophagus </li></ul><ul><li>D. Small intestine </li></ul>
  12. 12. Question 11 <ul><li>All of the following are features of the epiglottis except which one? </li></ul><ul><li>A. It covers the opening of the trachea. </li></ul><ul><li>B. It prevents food from entering the windpipe during swallowing. </li></ul><ul><li>C. It guides food down the esophagus. </li></ul><ul><li>D. It is the first GI tract sphincter. </li></ul>
  13. 13. Question 12 <ul><li>Most digestion takes place in the </li></ul><ul><li>A. stomach. </li></ul><ul><li>B. small intestine. </li></ul><ul><li>C. pancreas. </li></ul><ul><li>D. large intestine. </li></ul>
  14. 14. Question 13 <ul><li>The stomach empties into the small intestine through the </li></ul><ul><li>A. pyloric sphincter. </li></ul><ul><li>B. esophageal sphincter. </li></ul><ul><li>C. Sphincter of Oddi. </li></ul><ul><li>D. ileocecal sphincter. </li></ul>
  15. 15. Question 14 <ul><li>What is one function of the pyloric sphincter? </li></ul><ul><li>A. Prevents esophageal contents from emptying too quickly into the stomach </li></ul><ul><li>B. Prevents stomach contents from backing up into the esophagus </li></ul><ul><li>C. Prevents intestinal contents from backing up into the stomach </li></ul><ul><li>D. Prevents intestinal contents from emptying too quickly into the colon </li></ul>
  16. 16. Question 15 <ul><li>What sphincter separates the small intestine from the large intestine? </li></ul><ul><li>A. Pyloric </li></ul><ul><li>B. Esophageal </li></ul><ul><li>C. Rectal </li></ul><ul><li>D. Ileocecal </li></ul>
  17. 17. Question 16 <ul><li>The ring-like muscles that retard or prevent backflow of partially digested food in the gastrointestinal tract are called </li></ul><ul><li>A. sphincters. </li></ul><ul><li>B. passages. </li></ul><ul><li>C. openings. </li></ul><ul><li>D. gates. </li></ul>
  18. 18. Question 17 <ul><li>Which of the following is a description of chyme? </li></ul><ul><li>A. A watery mixture of partially digested food released by the stomach into the intestines </li></ul><ul><li>B. The semisolid mass of undigested food that is swallowed </li></ul><ul><li>C. The mixture of pancreatic juices containing enzymes for digestion </li></ul><ul><li>D. A thick, viscous material synthesized by mucosal cells for protection against digestive juices </li></ul>
  19. 19. Question 18 <ul><li>Which of the following is not a sphincter? </li></ul><ul><li>A. Duodenal </li></ul><ul><li>B. Esophageal </li></ul><ul><li>C. Pyloric </li></ul><ul><li>D. Ileocecal </li></ul>
  20. 20. Question 19 <ul><li>What is the function of mucus in the stomach? </li></ul><ul><li>A. Emulsifies fats </li></ul><ul><li>B. Neutralizes stomach acid </li></ul><ul><li>C. Digests food </li></ul><ul><li>D. Protects stomach cells from gastric juices </li></ul>
  21. 21. Question 20 <ul><li>Which of the following is a function of sphincter muscles? </li></ul><ul><li>A. Breaks apart food particles </li></ul><ul><li>B. Controls passage of food through the GI tract </li></ul><ul><li>C. Controls peristalsis </li></ul><ul><li>D. Releases enzymes and hormones into the GI tract </li></ul>
  22. 22. Answer Key – Chapter 3 <ul><li>C </li></ul><ul><li>D </li></ul><ul><li>B </li></ul><ul><li>A </li></ul><ul><li>A </li></ul><ul><li>C </li></ul><ul><li>C </li></ul><ul><li>B </li></ul><ul><li>D </li></ul><ul><li>A </li></ul><ul><li>D </li></ul><ul><li>B </li></ul><ul><li>A </li></ul><ul><li>C </li></ul><ul><li>D </li></ul><ul><li>A </li></ul><ul><li>A </li></ul><ul><li>A </li></ul><ul><li>D </li></ul><ul><li>B </li></ul>