⭕️5. Following is GABAB agonist
Anonymous Quiz
8%
(a) Muscimol
83%
(b) Baclofen
1%
(c) Picrotoxin
8%
(d) Bicuculline
⭕️6. Following is GABAA antagonist:
Anonymous Quiz
6%
(a) Muscimol
87%
(b) Bicuculline
1%
(c) Strychnine
5%
(d) Baclofen
⭕️7. The apparent stimulation of CNS by local anesthetic is due to
Anonymous Quiz
5%
(a) Direct excitatory action
68%
(b) Depression of inhibitory neurons
1%
(c) Non specific action
26%
(d) All of the above
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⭕️8. Histamine induced edema results from the action on _____ receptors
Anonymous Quiz
2%
(a) H3
3%
(b) H2
92%
(c) H1
3%
(d) All of the above
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⭕️9. Following is the effect of histamine on small vessels
Anonymous Quiz
3%
(a) Outward passage of plasma protein and fluid into the extracellular spaces
4%
(b) Increase in the flow of lymph and its protein content
2%
(c) Formation of edema
92%
(d) All of the above
⭕️10. Which of the following is not a CNS depressant but increases the tendency to fall asleep at night ?
Anonymous Quiz
1%
(a) Pyridoxine
1%
(b) Methaqualone
97%
(c) Melatonin
1%
(d) Ethanol
⭕️12. Which of the following neuromuscular blocking agent has short duration of action
Anonymous Quiz
5%
(a) Atracurium
81%
(b) Mivacurium
11%
(c) Pancuronium
3%
(d) Doxacurium
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⭕️13. Botulinium toxin causes muscle palsy by blocking
Anonymous Quiz
1%
(a) Nerve action potential
95%
(b) Acetylcholine release
2%
(c) Permeability to sodium and potassium
2%
(d) Muscle action potential
⭕️14. Neuromuscular blocking drugs do not produce central actions because
Anonymous Quiz
3%
(a) Nicotinic receptors are not present in the brain
93%
(b) They do not cross the blood-brain barrier
2%
(c) They are sequestrated in the periphery by tight binding to the skeletal muscles
2%
(d) They do not ionize at the brain pH
⭕️15. Pancuronium differs from tubocurarine in that
Anonymous Quiz
2%
(a) It is a depolarizing blocker
2%
(b) Its action is not reversed by neostigmine
96%
(c) It can cause rise in BP on rapid I.V. injection
1%
(d) It causes marked histamine release
⭕️16. The drug that produces neuromuscular blockade by persistent epolarization is
Anonymous Quiz
12%
(a) D-tubocurarine
2%
(b) Gallamine
11%
(c) Pancuronium
76%
(d) Decamethonium
⭕️17. Agents that block neuromuscular transmission of acetyl choline acts via
Anonymous Quiz
2%
(a) Inhibiting acetyl choline synthesis
3%
(b) Inhibiting acetyl choline release
1%
(c) Inhibiting post-synaptic action of acetyl choline
95%
(d) All of the above
⭕️18. Which of the following drugs enhances GABA actions on the neuromuscular junctions of nematodes and arthropods?
Anonymous Quiz
5%
(a) Glutamic acid
80%
(b) Ivermectin
10%
(c) Picrotoxin
2%
(d) Pyrantel pamoate
3%
(e) Pyrimethamine
⭕️19. The therapeutic use of neostigmine bromide is as a
Anonymous Quiz
2%
(a) Miotic
3%
(b) CNS depressant
92%
(c) Treatment of curare poisoning
2%
(d) Neuromuscular blocker
1%
(e) Muscle relaxan
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⭕️20. The organ extremely sensitive to the action of atropine is
Anonymous Quiz
3%
(a) Gastric glands
95%
(b) Salivary glands
1%
(c) Urinary bladder muscle
1%
(d) Heart
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⭕️21. The antimuscarinic agent preferred in the management of motion sickness is
Anonymous Quiz
5%
(a) Atropine methonitrate
93%
(b) Scopolamine
0%
(c) Homatropine methyl bromide
2%
(d) Ipratropium bromide
⭕️23. Atropine in doses of 2.0mg to 5.0mg may cause
Anonymous Quiz
3%
(a) Increased heart rate
2%
(b) dryness of mouth
1%
(c) Dilated pupils
0%
(d) Difficulty in micturition
95%
(e) All of the above
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⭕️24. Concurrent use of atropine will interfere with the anti-glaucoma action of
Anonymous Quiz
5%
(a) Pilocarpine
71%
(b) Physostigmine
12%
(c) Carbachol
11%
(d) All of the above
1%
(e) None of the above
⭕️25. Following is a synthetic analogue of atropine, used as an inhalational drug in asthma
Anonymous Quiz
3%
(a) Benztropine
1%
(b) Pirenzepine
83%
(c) Ipratropium
12%
(d) All of the above
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