Nokea
Which of the following cells secrete pepsinogen?
- A. Parietal cells
- B. Alpha cells
- C. Chief cells
- D. Stem cells
Correct Answer: C
Rationale: Chief cells in the stomach are responsible for secreting pepsinogen, which is then activated to pepsin by the acidic environment created by HCl.
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Match: Monosaccharide
- A. simplest component of a carbohydrate
- B. building block of proteins
- C. component of nucleic acids
- D. form of stored energy
Correct Answer: A
Rationale: Monosaccharides, such as glucose, are the simplest units of carbohydrates and serve as immediate energy sources.
During prolonged fasting-
- A. First fats are used up, followed by carbohydrate from liver and muscles, and protein in the end
- B. First carbohydrate are used up, followed by fat and proteins towards end
- C. First lipids, followed by proteins and carbohydrates towards end.
- D. None of the above
Correct Answer: B
Rationale: In fasting, carbohydrates (glycogen) are used first, followed by fats, and then proteins.
Small finger-like projection, which produce numerous microscopic projections are supplied with a network of
- A. Blood capillaries and lacteal
- B. Blood capillaries only
- C. Lacteal only
- D. A large lymphoid vessel and valves
Correct Answer: A
Rationale: Villi contain blood capillaries and lacteals for absorbing nutrients like glucose and fats.
Which nerve is primarily responsible for the neural control of the gastric phase, including the stimulation of gastric secretions?
- A. Facial nerve
- B. Vagus nerve
- C. Glossopharyngeal nerve
- D. Spinal accessory nerve
Correct Answer: B
Rationale: The vagus nerve (cranial nerve X) is the primary nerve responsible for parasympathetic control of the stomach, stimulating gastric secretions and motility during the gastric phase.
Which is the possible cause of a urinary tract infection?
- A. bacteria in the urinary system
- B. calcium buildup in the kidney
- C. prostate enlargement
- D. kidney stones
Correct Answer: A
Rationale: Bacteria in the urinary system are the most common cause of urinary tract infections.