Nokea
Which of the following hormones is primarily responsible for stimulating the release of hydrochloric acid (HCl) from parietal cells during the gastric phase?
- A. Insulin
- B. Gastrin
- C. Glucagon
- D. Somatostatin
Correct Answer: B
Rationale: Gastrin, released by G cells, stimulates parietal cells to secrete HCl during the gastric phase of digestion.
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A set of permanent teeth contains:
- A. 20 teeth
- B. 30 teeth
- C. 32 teeth
- D. 24 teeth
Correct Answer: C
Rationale: An adult human has 32 permanent teeth.
How should the student explain the normal function of the pancreas in the process of digestion?
- A. Produces enzymes for digestion
- B. Stores bile
- C. Secretes gastrin
- D. Absorbs nutrients
Correct Answer: A
Rationale: The pancreas produces digestive enzymes (e.g., trypsin, amylase) for breaking down proteins, carbohydrates, and fats.
C-shaped widest part of intestine
- A. Pancreas
- B. Liver
- C. Duodenum
- D. Thyroid
Correct Answer: C
Rationale: The duodenum is the C-shaped, widest part of the small intestine.
Zymogen cells of fundic glands show the following EXCEPT:
- A. Secrete gastric lipase
- B. Secrete rennin enzyme
- C. Present in the gland neck
- D. Secrete pepsinogen
Correct Answer: C
Rationale: Zymogen (chief) cells are located in the body and base of fundic glands, not the neck, and secrete pepsinogen and gastric lipase.
Which of these is not a carbohydrate?
- A. sugar
- B. starch
- C. fat
- D. cellulose
Correct Answer: C
Rationale: Fat is a lipid, not a carbohydrate, unlike sugar, starch, and cellulose.