Drugs acting on ANS Last updated: 2024/04/15 at 6:45 PM Pharmacology Mentor 148 Views Share 0 Min Read SHARE Welcome to Drugs acting on ANS 1. Acetylcholine is not used commercially because: Rapidly destroyed in the body Crosses blood brain barrier Costly Long duration of action None 2. Ideal drug employed in the preoperative preparation for surgical excision of pheochromocytoma is: Reserpine Clonidine Atenolol Phenoxybenzamine None 3. Pilocarpine reduce the intraocular pressure in persons with closed angle glaucoma by: Contracting iris sphincter muscle Relaxing ciliary muscle Increasing aqueous humor outflow Reducing aqueous humor secretion None 4. A child on β2 agonists for treatment of bronchial asthma may exhibit all of the following features EXCEPT: Tremors Hypoglycemia Hypokalemia Bronchodilation None 5. Cholinomimetics are useful in all of the following conditions EXCEPT: Partial heart block Post operative atony of bladder Myasthenia gravis Glaucoma None 6. The short acting anticholinesterase drug is: Edrophonium Dyflos Demecarium Ectothiophate None 7. Which of the following drugs does not cross blood placental barrier? Atropine Glycopyrrolate Physostigmime Hyoscine hydro bromide None 8. An ultrashort acting β−blocker devoid of partial agonistic or membrane stabilizing action is: Atenolol Timolol Pindolol Esmolol None 9. Alpha 1a (α1A) adrenergic blocker providing symptomatic relief in BPH is: Prazosin Doxazosin Tamsulosin Tolazoline None 10. Retinoscopy in 5-year-old is best done with: Atropine Tropicamide Homatropine Cyclopentolate None 11. An 80 kg patient is brought in the causality in shock. Dopamine needs to be started at 10 micro/kg/min rate. A 5 mL vial contains 200 mg of dopamine. Two vials are diluted to a solution of 250 mL with the help of normal saline. Calculate drops per minute required to be administered if 1 mL = 16 drops. 8 24 16 32 None 12. Neostigmine is not able to cross blood brain barrier because of its: Tertiary structure Quarternary structure Primary structure Secondary structrure None 13. Which of the following drug is a long acting beta-2 agonist? Orciprenaline Pirbuterol Salmeterol Albuterol None 14. Treatment of choice for anaphylactic shock is: Adenosine 12 mg intravenously Adrenaline 0.5 mL of 1:1000 solution by intramuscular route Atropine 3 mg intravenously Adrenaline 1 mL of 1:10000 by intravenous route None 15. The beta blocker having intrinsic sympathomimetic activity is: Sotalol Propranolol Pindolol Atenolol None 16. Which ONE of the drugs used for atropine toxicity? 2-Pralidoxime Physostigmine Naloxone Flumazenil None 17. Diagnosis of myasthenia gravis is done by using: Edrophonium Neostigmine Atropine Succinylcholine None 18. Mechanism of action of pralidoxime is: Inhibition of breakdown of ACh Stimulation of ACh receptors Blockade of ACh receptors Reactivation of AChE enzyme None 19. A patient presents to emergency with pinpoint pupil, salivation, lacrimation, tremors and red tears. Plasma cholinesterase level was 30% of normal. Most probable Diagnosis is: Opioid poisoning Organophosphate poisoning Pontine hemorrhage Datura/belladonna poisoning None 20. Major neurotransmitter released at end organ effectors of the sympathic division of the autonomic nervous system is: Noradrenaline Dopamine Adrenaline Acetylcholine None 21. Drug of choice for mushroom poisoning is: Physostigmine Atropine Adrenaline Carbachol None 22. A child presented with history of ingestion of some unknown plant and developed mydriasis, tachycardia, dry mouth, warm skin and delirium. Which of the following group of drugs is likely to be responsible for the symptoms of this child? Sympathomimetic Opioid Benzodiazepine Anticholinergic None 23. Drug of choice in treatment of myasthenia gravis is: Hexamethonium Gallamine d-Tubocurarine Neostigmine None 24. Atropine is useful in organophosphate poisoning because it: Competes with acetylcholine release Binds with both nicotinic and muscarinic acetylcholine receptors Is a competitive antagonist of acetylcholine Reactivates acetylcholinesterase None 25. A hypertensive patient has heart rate of 50 beats/min and taking tablet atenolol 200 mg/day in divided doses. After anesthesia, heart rate further fell down to 40 beats/min. What will be the appropriate treatment to improve heart rate: IV atropine IV adrenaline IV isoprenaline Dobutamine infusion intravenously None 26. Organophosphates act by inhibiting the enzyme acetylcholinesterase. Which type of enzyme inhibitors are they? Competitive and irreversible Competitive and reversible Non-competitive and irreversible Uncompetitive and reversible None 27. Antidote for nicotine poisoning is: Atropine sulphate Trimethaphan Phentolamine Neostigmine None 28. Beta blocker having both α and β blocking property is: Sotalol Pindolol Carvedilol Nadolol None 29. A 35-year-old man was found unconscious. Examination revealed bilateral constricted pupils, bradycardia, excessive sweating and secretion. Most likely cause is: Opium poisoning Organophosphate poisoning Acute alcohol intoxication Pontine hemorrhage None 30. Use of tiotropium is contraindicated in: Bronchial asthma Urinary retention Hypertension Peptic ulcer disease None 31. A 24-years-old farm worker is rushed to a nearby emergency department after an accidental exposure to parathion. Which of the following drugs can be given to increase the activity of his acetyl cholinesterase: Dimercaprol Physostigmine Pralidoxime Atropine None 32. Which of the following alpha-blocker drug is used in the treatment of benign hypertrophy of prostate without producing significant hypotension? Tamsulosin Dexazosin Phentolamine Terazosin None 33. Beta blockers are not indicated in: Chronic CHF Hypertension Arrhythmia Acute CHF None 34. All of the following are cardioselective beta blockers EXCEPT: Atenolol Propranolol Bisoprolol Esmolol None 35. Which is the shortest acting mydriatic? Tropicamide Homatropine Atropine Cyclopentolate None 36. Beta blockers are indicated for all of the following conditions EXCEPT: Portal hypertension Alcohol withdrawal Performance anxiety Hypothyroidism None Time's upTime is Up! Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always seek the advice of a healthcare provider with any questions regarding a medical condition. You Might Also Like PHAL6013 practice quiz -2 PHAL6013 practice questions Local Anesthetics Post Lab Quiz – MDSC2203-2023-24 Quiz on Antihyperlipidemics Quiz on Antihypertensives Sign Up For Daily NewsletterBe keep up! Get the latest breaking news delivered straight to your inbox. 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