Nokea
Excess amino acids are deaminated & converted into urea in -
- A. Kidneys
- B. Liver
- C. Spleen
- D. Pancreas
Correct Answer: B
Rationale: The liver deaminates excess amino acids and converts them into urea.
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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.
Amylase breaks down what macromolecule?
- A. Protein
- B. Fat
- C. DNA
- D. Starch
Correct Answer: D
Rationale: Amylase breaks down starch into simpler sugars like maltose.
Which division of the Enteric Nervous System is most likely to be stimulated by a pH change in the chyme?
- A. Submucosal Plexus (Meissner plexus)
- B. Myenteric Plexus (Auerbach Plexus)
- C. Both
- D. Neither
Correct Answer: A
Rationale: The submucosal plexus regulates secretions and senses luminal pH changes, responding to chyme acidity.
A 70-year-old male patient is experiencing symptoms of constipation, bloating, and abdominal discomfort. Physical examination reveals visible distension of the abdomen, and a contrast study shows dilation of the large intestine. Which of the following motility disorders is the most probable cause of the patient's symptoms?
- A. Excessive peristalsis in the large intestine
- B. Impaired segmentation in the small intestine
- C. Reduced peristalsis in the large intestine
- D. Excessive segmentation in the small intestine
Correct Answer: C
Rationale: Reduced peristalsis in the large intestine slows transit, leading to constipation, bloating, and dilation, as seen in the contrast study.
Insulin is secreted by pancreatic cells-
- A. α-cells
- B. β-cells
- C. Delta cells
- D. Gama cells
Correct Answer: B
Rationale: Insulin is secreted by β-cells in the Islets of Langerhans.