Chapter 66 Physiology of Gastrointestinal Disorders

Chapter 66  Physiology of Gastrointestinal Disorders

Complete Chapter Questions And Answers
 

Sample Questions

36. Which of the following enzymes is attached to the plasma membrane of mature enterocytes of the small intestinal?
A. Amylase
B. Chymotrypsin
C. Lipase
D. Pepsin
E. Sucrase
F. Trypsin

ANS: E

37. The assimilation of fat includes (1) absorption of fat by enterocytes, (2) secretion of chylomicrons, (3) emulsification of fat, and (4) micelle formation. Which of the following best describes the correct temporal order of events?
A. 4, 3, 2, 1
B. 3, 1, 4, 2
C. 3, 4, 1, 2
D. 2, 1, 4, 3
E. 4, 2, 1, 3
F. 2, 4, 1, 3
G. 1, 2, 3, 4
H. 1, 3, 2, 4

ANS: C

38. A 30-year-old woman visits her physician because of abdominal bloating, excessive flatus, and diarrhea. The physician notes the absence of surgical scars during a physical exam. The results of a 72-hour stool collection indicate excessive amounts of fat in the stool, and 90% of the stool fat consists of triglycerides. Which of the following best describes the nature of this patient’s problem?
A. Celiac disease
B. Crohn’s disease
C. Lactose intolerance
D. Pancreatic disease
E. Short bowel syndrome
F. Ulcerative colitis

ANS: D

39. A 19-year-old female visits her physician because of nausea, diarrhea, light headedness, and flatulence. The physician administers 50 grams of oral lactose at time zero, and measures breath hydrogen every 30 minutes for three hours using a handheld monitor. The results are shown. Which of the following best describes this patient’s condition?
A. Brush border lactase deficiency
B. Brush border lactase excess
C. Decreased pancreatic lactase
D. Increased pancreatic lactase
E. No digestive abnormality

ANS: A

40. Which of the following best describes the origin of the hydrogen that is expired in the breath of a patient with lactose intolerance?
A. Colon
B. Duodenum
C. Ileum
D. Jejunum
E. Stomach

ANS: A