Tut 3

Which of the following effect is elicited by cholinergic drugs acting on the muscarinic receptors at the effector tissues?

• Decreased heart ratio

• Dry mouth

• Mydriasis

• Urinary retention

Which of the following cholinergic drug is used for treating postoperative gastrointestinal atony?

• Bethanechol

• Ecothiophate

• Pilocarpine

• Atropine

Which of the following drug is administered as eye drops to produce miosis?

• Atropine

• Cycolpentolate

• Pilocarpine

• Tropicamide

Pilocarpine is used as eye drops in the treatment of glaucoma. Which of the following explains the main reason for its use in this condition?

• Easily crosses the blood-brain barrier

• Improves accommodation

• Not rapidly destroyed by cholinesterase

• Reduces intraocular pressure

Which of the following drug is useful for treating glaucoma because it increases the drainage of aqueous humour?

• Atropine

• Cyclopentolate

• Pilocarpine

• Tropicamide

Which of the following anticholinesterase drug has a short duration of action?

• Edrophonium

• Neostigmine

• Physostigmine

• Pyridostigmine

Which one of the following anticholinesterase agents is used in the diagnosis of myasthenia gravis?

• Edrophonium

• Neostigmine

• Physostigmine

• Pyridostigmine

A 30-year-old woman with a history of glaucoma presents to the eye clinic with complains of visual disturbances, She suffers an acute attack of glaucoma when a drug is wrongly administered into her eyes. Which of the following drugs is likely to have been administered?

• Physostigmine

• Atropine

• Pilocarpine

• Neostigmine

A 60-year-old man is diagnosed with enlarged prostate. Which of the following drugs can precipitate urinary retention if it is administered to this patient?

• Physostigmine

• Atropine

• Pilocarpine

• Neostigmine

Atropine will block all of the effects if acetylcholine except:

• Bradycardia

• Salivary secretion

• Bronchoconstriction

• Skeletal muscle contraction