Anatomy & Physiology

Anatomy & Physiology Study Guide

23.17 Chapter Twenty-Three Practice Exam 1. The enzymatic breakdown of large molecules into their basic building blocks is called ____________. a. Absorption b. Secretion c. Mechanical digestion d. Chemical digestion 2. The outer layer of the digestive tract is known as the ____________. a. Serosa b. Mucosa c. Submucosa d. Muscularis 3. Double sheets of peritoneum that provide support and stability for the organs of the peritoneal cavity are the ____________. a. Mediastina b. Mucous membranes c. Omenta d. Mesenteries 4. A branch of the portal vein, hepatic artery, and tributary of the bile duct form ____________. a. A liver lobule b. The sinusoids c. A portal area d. The hepatic duct e. The pancreatic duct 5. Most of the digestive tract is lined by ____________ epithelium. a. Pseudostratified ciliated columnar b. Cuboidal c. Stratified squamous d. Simple e. Simple columnar

6. Regional movements that occur in the small intestine and function to churn & fragment the digestive material are called ____________. a. Segmentation b. Pendular movements c. Peristalsis d. Mass movements e. Mastication 7. Bile release from the gallbladder into the duodenum occurs only under the stimulation of ____________. a. Cholecystokinin b. Secretin c. Gastrin d. Enteropeptidase 8. The major function(s) of the large intestine is (are) ____________. a. Reabsorption of water and compaction of feces b. Absorption of vitamins liberated by bacterial action c. Storage of fecal material prior to defecation d. All of the above 9. Vitamins generated by bacteria in the colon are ____________. a. Vitamins A, D, and E b. B complex vitamins and vitamin C c. Vitamin K, biotin, and pantothenic acid d. Viacin, thiamine, and riboflavin 10. The final enzymatic steps in the digestive process are accomplished by ____________. a. Brush border enzymes of the microvilli b. Enzymes secreted by the stomach c. Enzymes secreted by the pancreas d. The action of bile from the gallbladder A swer key found on page 366. .

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