Nokea
Based on knowledge of the pancreas's role in digestion, what substance produced by the pancreas may be required as a supplement for long-term health management after its surgical removal?
- A. Pancreatic enzymes
- B. Vitamin B12
- C. Gastrin
- D. Bile salts
Correct Answer: A
Rationale: Pancreatic enzyme supplements are needed post-pancreatectomy to aid digestion.
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Proteolytic enzyme of stomach is -
- A. Trypsin
- B. Pepsin
- C. Chymotrypsin
- D. Carboxypeptidase
Correct Answer: B
Rationale: Pepsin is the main proteolytic enzyme in the stomach, active in acidic pH.
The enzyme trypsinogen is secreted from-
- A. Duodenum
- B. Pancreas
- C. Liver
- D. Stomach
Correct Answer: B
Rationale: Trypsinogen is secreted by the pancreas and activated to trypsin in the duodenum.
Peristalsis moves food material:
- A. in the stomach and small intestine only
- B. in the small and large intestines only
- C. in the stomach and small and large intestines only
- D. from the pharynx to the anal canal
Correct Answer: D
Rationale: Peristalsis is a wave-like muscle contraction that moves food material through the entire gastrointestinal tract.
The following cells are involved in lipid digestion & absorption EXCEPT:
- A. Parotid acini
- B. Liver cells (hepatocytes)
- C. Pancreatic acini
- D. Chief cells of fundic glands
Correct Answer: A
Rationale: Parotid acini produce saliva, which begins carbohydrate digestion, not lipid digestion; hepatocytes and pancreatic acini produce bile and lipase for lipids.
Which of the following choices leads to an elevation in stomach pH?
- A. Impairment of the mucous neck cells
- B. Heightened activity of G cells
- C. Suppression of parietal cells
- D. Excessive expression by chief cells
Correct Answer: C
Rationale: Suppression of parietal cells reduces HCl secretion, increasing stomach pH (making it less acidic).