BIOL 121 CHAPTER 25 THE DIGESTIVE SYSTEM | VERIFIED EXAM

BIOL 121 CHAPTER 25 THE DIGESTIVE SYSTEM Human Anatomy, 7e (Martini/Timmons/Tallitsch) Chapter 25 The Digestive System 1) Functions of the digestive system include which of the following? A) ingestion of foods and liquids B) processing of food materials and liquids C) warming the body with heat released from the digestive organs as they process food D) boosting expiratory efficiency by lifting the diaphragm via intestinal gas secretions E) both ingestion and processing of food materials and liquids 2) The correct order of the digestive tube layers, from lumen outward, is: (1) mucosa (2) muscularis externa (3) serosa (4) submucosa A) 3, 1, 2, 4 B) 4, 1, 2, 3 C) 4, 2, 3, 1 D) 1, 4, 2, 3 E) 1, 4, 3, 2 3) Sandwiched between the layer of circular and longitudinal muscle in the muscularis externa is the A) myenteric plexus. B) mucosa. C) submucosa. D) muscularis mucosa. E) mesocolon. 4) The lining of the digestive tract plays a defensive role by protecting surrounding tissues against A) the corrosive effects of digestive enzymes. B) the corrosive effects of acids. C) mechanical stresses. D) pathogens that are swallowed with food. E) All of the answers are correct. 5) The areolar connective tissue found immediately beneath the epithelium of the digestive tract is called A) basement membrane. B) mucosa. C) plica. D) lamina propria. E) All of the answers are correct. 6) The muscular layer farthest from the lumen is (the) A) circular layer of the muscularis externa. B) longitudinal layer of the muscularis externa. C) muscularis mucosae. D) oblique layer of the muscularis externa. E) None of the answers are correct. 7) Control of secretions of the digestive tract is via the A) hypoglossal nerve. B) submucosal plexus. C) myenteric plexus. D) sympathetic nervous system. E) Control is different in various areas of the tract 8) In areas where the digestive tract is not covered in serosa it is covered by a fibrous connective tissue called A) peritoneum. B) the plexus of Auerbach. C) adventitia. D) mucosa. E) None of the answers are correct. 9) Peristalsis A) is a condition wherein the lining of the digestive tract is irritated by the passage of rough fibrous material. B) is waves of muscular contractions that move along the length of the digestive tract. C) only occurs in the esophagus. D) is a muscular movement pattern that occurs in regions of the digestive tract where the smooth muscle fibers are not arranged in layers. E) None of the answers are correct. 10) Long reflexes A) do not involve the CNS. B) are required for peristalsis and segmentation. C) are controlled by the enteric nervous system. D) involve the myenteric plexus. E) provide a higher level of control over digestive functions.