BIOL 121 CHAPTER 25 THE DIGESTIVE SYSTEM

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 Answer: E 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 Answer: D 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. Answer: A 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. Answer: E 5) The areolar connective tissue found immediately beneath the epithelium of the digestive tract is called A) basement membrane