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Oral Medicine NEET MDS Practice Test
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Practice Test

Oral Medicine - 3 Questions

1
Oral Medicine

In which condition is the plasma cholesterol level increased?
1) Hyperthyroidism
2) Obstructive jaundice
3) Nephrotic syndrome
4) Diabetes mellitus

📝 Explanation:

Obstructive jaundice is associated with increased cholesterol levels due to impaired cholesterol metabolism.

2
Oral Medicine

In humoral hypercalcemia of malignancy (HHM), what is the most common overproduced substance leading to hypercalcemia?
(1) Parathyroid hormone (PTH)
(2) Parathyroid hormone-related protein (PTHrP)
(3) 1,25-dihydroxyvitamin D (1,25(OH)2D)
(4) Calcitonin

📝 Explanation:

PTHrP is a protein that is structurally similar to parathyroid hormone (PTH) but is produced by some tumor cells. It acts on the PTH receptor, leading to increased calcium levels in the blood, similar to PTH. HHM is most often associated with overproduction of PTHrP by tumors, causing hypercalcemia without the typical elevation in PTH levels seen in primary hyperparathyroidism.

3
Oral Medicine

A patient with severe asthma is prescribed a combination of albuterol and ipratropium. What is the primary mechanism of action for each medication?
(1) Albuterol: beta2-adrenergic agonist; Ipratropium: muscarinic antagonist
(2) Albuterol: muscarinic antagonist; Ipratropium: beta2-adrenergic agonist
(3) Albuterol: beta-adrenergic agonist; Ipratropium: muscarinic antagonist
(4) Albuterol: muscarinic agonist; Ipratropium: beta2-adrenergic antagonist

📝 Explanation:

Albuterol is a beta2-adrenergic agonist that relaxes bronchial smooth muscles, while ipratropium is a muscarinic antagonist that blocks the parasympathetic effects on the airways, leading to bronchodilation.

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