Gastro-Intestinal System MCQ Graded A+

Gastro-Intestinal System MCQ Graded
A+
Which of the following statements is WRONG ? The end products of:
A. protein digestion are transported to the liver via the hepatic portal vein
B. triglyceride digestion are transported to the liver via the lymphatic
system
C. carbohydrate digestion are transported to the liver in the blood
D. triglyceride digestion are transported via the lymphatic system
B
One of the following processes is NOT part of mechanical digestion. Which
One?
A. hydrolysis
B. peristalsis
C. segmentation
D. mastication
A
Which type of cell produces hydrochloric acid?
A. Zymogenic cells
B. Parietal cells
C. Chief cells
D. Enteroendocrine cells
B
Which of the following glands are accessory organs of the digestive system?
A. adrenal glands
B. pancreatic islets
C. gastric glands
D. salivary glands
D
What is the role of gastrin in the digestive system?
A. to stimulate release of bile and pancreatic juice
B. to stimulate gastric secretion
C. to activate pepsinogen
D. to hydrolyse proteins to polypeptides
B
Which liver cells produce bile?
A. Kupffer cells
B. sinusoids
C. hepatocytes
D. the acini

,C
What are the end products of carbohydrate digestion?
A. chylomicrons
B. amino acids
C. free fatty acids
D. monosaccharides
D
What feature of the small intestine enhances its ability to absorb digested
food?
A. its large surface area
B. the gaps between adjacent epithelial cells
C. secretion of the hormone absorption
D. its longer length compared to the large intestine
A
Which of the following gut structures are listed in the correct order that food
would pass through them, from input to exit?
A. pyloric sphincter, ileum, jejunum, transverse colon.
B. pancreas, jejunum, ascending colon, sigmoid colon.
C. ileum, duodenum, descending colon, ascending colon.
D. duodenum, ileum, caecum, transverse colon.
D
Which statement about the layers of the alimentary canal is correct?
A. The serosa absorbs the products of digestion.
B. The mucosa protects against self-digestion.
C. The sub-mucosa is involved in segmentation and peristalsis
D. The muscularis externa is dense connective tissue.
B
Which of the following pairs of substances are NOT secreted by the stomach
as part of "gastric juice"?
A. hydrochloric acid and pepsinogen
B. hormones and intrinsic factor
C. nuclease and amylase
D. mucus and gastrin
C
What are some products of lipid digestion?
A. free bases and pentose sugars
B. fructose and glucose
C. amino acids and small peptides
D. free fatty acids and monoglycerols
D
From which of the gut structures below is most digested food absorbed?
A. duodenum
B. stomach
C. ileum
D. ascending colon
C

, Which of the following is an active enzyme?
A. procarboxypeptidase
B. pepsin
C. telophase
D. trypsinogen
B
Which of the following is a function of the liver?
A. Recycling of non-viable red blood cells
B. Conversion of pyruvic acid to lactic acid
C. Synthesis of plasma proteins
D. Production of renin
C
What is the term applied to the production of glucose from non-carbohydrate
molecules?
A. deamination
B. transamination
C. glycogenolysis
D. gluconeogenesis
D
Which of the following terms is used to describe the changing of large food
molecules into smaller molecules?
A. mechanical digestion
B. deglutition
C. segmentation
D. hydrolysis
D
What is the purpose of "intrinsic factor" in gastric juice?
A. to activate pepsinogen
B. to assist with the absorption of vitamin B12
C. to protect the stomach lining against hydrochloric acid
D. it stimulates the release of gastrin
B
Which of the following does NOT contribute to increasing the surface area of
the small intestine?
A. the brush border
B. plicae circulars
C. intestinal crypts
D. villi
C
What are the end-products of carbohydrate digestion?
A. monosaccharides
B. disaccharides
C. glucose
D. trisaccharides
A