Nokea
Neck of fundic [gastric] gland contain the following except:
- A. Mucous neck cells
- B. Paneth cells
- C. Parietal cells
- D. Stem cells
Correct Answer: B
Rationale: Paneth cells are found in the small intestine, not in gastric glands; the neck contains mucous neck cells, parietal cells, and stem cells.
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When teaching a group of senior citizens about nutrition, the nurse should include information about which of the following age-related changes in gastrointestinal functioning?
- A. Sensory changes that affect taste
- B. Problems with dentition
- C. Reduced gastric juice secretion
- D. Enhanced GI muscle tone
Correct Answer: C
Rationale: Reduced gastric juice secretion is a common age-related change affecting digestion.
Which is the longest organ of digestive system in human body?
- A. Pancreatic duct
- B. Small intestine
- C. Large intestine
- D. Esophagus
Correct Answer: B
Rationale: The small intestine is the longest part of the digestive system, measuring about 7 meters (22 feet). Its main functions are to complete the digestion of food and to absorb nutrients.
Which of the following is not a major gastrointestinal hormone?
- A. epinephrine
- B. secretin
- C. gastrin
- D. cholecystokinin
Correct Answer: A
Rationale: Epinephrine is not a gastrointestinal hormone; it is primarily involved in the sympathetic nervous system.
Obstruction of the common bile duct by gallstones would most likely affect the digestion of:
- A. carbohydrates
- B. fats
- C. proteins
- D. nucleic acids
Correct Answer: B
Rationale: Bile is essential for the emulsification and digestion of fats. An obstruction in the common bile duct would impair fat digestion.
What role does the stomach play in the maintenance of normal vitamin B12 levels?
- A. Produces intrinsic factor
- B. Absorbs vitamin B12
- C. Stores vitamin B12
- D. Converts vitamin B12
Correct Answer: A
Rationale: The stomach's parietal cells produce intrinsic factor, necessary for vitamin B12 absorption in the ileum.