MCQ OF THE DAY KONCPT NEET PG RESPIRATORY SYSTEM
1. Longest acting beta agonist is:
(a) Salbutamol
(b) Terbutaline
(c) Salmeterol
(d) Indacaterol
Ans D
VLABA – Indacaterol, Vilanterol, Oladaterol
Ref KDT 8th edition Pg no 242
2. Directly acting cough suppressant is:
(a) Dextromethorphan
(b) Bromhexine
(c) Acetylcysteine
(d) Guaiphenesin
Ans A
Directly acting Antitussives – Codeine, Dextromethorphan
Ref KDT 8th edition Pg no 239
3. Inhaled sodium cromoglycate:
(a) Prevents the antigen antibody combination
(b) May cause cardiac arrhythmias
(c) Prevents exercise induced bronchialspasm
(d) Effective in alleviating an acute episode of allergic asthma
Ans C
Sodium cromoglycate a mast cell stabilizer – used to prevent exercise induced asthma
Ref KDT 8th edition Pg no 249
4. In bronchial asthma the mechanism of action ofcorticosteroids is:
(a) Relax airway smooth muscle directly
(b) Inhibits mast cell deregulation
(c) Inhibits adenosine receptors
(d) Inhibits lymphocytic eosinophilic mucosal inflammation
Ans D
Corticosteroids act by inhibiting bronchial inflammation
Ref KDT 8th edition Pg no 249,250
5. Mechanism of action of montelukast is:
(a) Competitive antagonist of leukotriene receptors
(b) Inhibits alpha receptor
(c) Beta receptor agonist
(d) Non-competitive inhibitor of leukotriene synthesis
Ans A
Montelukast – Competitive antagonist of leukotriene receptor
Ref KDT 8th edition Pg no 249,250