NURS 308 Final Exam Study Guide Questions with Complete Solutions

Discuss digestion and which substrate, proteins, carbohydrates, fats, or amino acids take place in the mouth. Correct Answer-Salivary alpha amylase-enzyme that initiates carbohydrate digestion in mouth The parasympathetic nervous system activity (PANS) effect on salivary glands involves what effect on GI activity? Correct Answer-Parasympathetic nervous system stimulates salivary glands and atropine (inhibits salvation and makes mouth dry), the activation/stimulation increases GI activity What is peristalsis? Correct Answer-a coordinated, involuntary sequential contraction and relaxation of the outer longitudinal and inner circular layers of the intestinal muscles which moves food along. How is peristalsis initiated? Correct Answer-Stimulated when afferent fibers distributed along the length of the esophagus sense changes in intestinal wall tension caused by stretching as food passes. The greater the tension, the greater the intensity of contraction What is the function of gastric glands? Correct Answer-Gastric glands- primary secretory units in the stomach body and fundus. Produce large volumes of gastric juices including mucus, enzymes, acid, hormones, intrinsic factor, and gastroferrin.