Nokea
Match: Peristalsis
- A. moves food along the digestive tract
- B. initiates swallowing
- C. produces enzymes
- D. breaks down nutrients
Correct Answer: A
Rationale: Peristalsis refers to the wave-like muscular contractions that propel food along the digestive tract.
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One of the following is not a constituent of saliva:-
- A. Bicarbonate
- B. Lysozyme
- C. Glucose
- D. Immunoglobulin
Correct Answer: C
Rationale: Saliva does not contain glucose; it includes bicarbonate, lysozyme, and immunoglobulins.
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).
Four test tubes, each containing 2cm3 of amylase solution are treated as follows: 1 boiled, then cooled to 1 °C 2 boiled, then cooled to 25 °C 3 frozen, then warmed to 1 °C 4 frozen, then warmed to 25 °C 10 cm3 of starch solution were then added to each tube and after 5 minutes, 2 drops of iodine solution were added to each tube. Which row shows the results?
- A. 1: blue-black, 2: blue-black, 3: yellow-brown, 4: yellow-brown
- B. 1: blue-black, 2: yellow-brown, 3: blue-black, 4: yellow-brown
- C. 1: yellow-brown, 2: blue-black, 3: blue-black, 4: yellow-brown
- D. 1: yellow-brown, 2: yellow-brown, 3: blue-black, 4: blue-black
Correct Answer: A
Rationale: Boiling denatures the enzyme permanently, while freezing does not affect its activity once thawed.
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.
All about foliate papilla is true EXCEPT:
- A. Present at tip & sides of tongue rabbit
- B. Covered by st sq nonkeratinized epith.
- C. Rare in human but numerous in rabbits
- D. Its sides carry taste buds.
Correct Answer: A
Rationale: Foliate papillae are located on the posterolateral sides of the tongue, not the tip, and are rudimentary in humans but prominent in rabbits.