Pharmacology - Mock Test 45

Question 441

Cholinergic muscarinic receptor stimulation produces the following effects <u>except</u>

A) Sweating B) Rise in blood pressure C) Bradycardia D) Urination

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Question 442

The organ most sensitive to actions of atropine is

A) Gastric glands B) Salivary glands C) Urinary bladder muscle D) Heart

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Question 443

Atropine produces the following actions except

A) Tachycardia B) Mydriasis C) Dryness of mouth D) Urinary incontinence

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Question 444

Atropine does not exert relaxant/antispasmodic effect on the following muscle

A) Intestinal B) Ureteric C) Bronchial D) Laryngeal

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Question 445

Initial bradycardia caused by intramuscular injection of atropine is believed to be caused by

A) Stimulation of medullary vagal centre B) Stimulation of vagal ganglia C) Blockade of M2 receptors on SA nodal cells D) Blockade of muscarinic autoreceptors on vagal nerve endings

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Question 446

Atropine does not antagonise the following feature of anticholinesterase poisoning

A) Hypotension B) Central excitation C) Muscle paralysis D) Bronchoconstriction

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Question 447

The choline ester resistant to both true and pseudocholinesterase is

A) Methacholine B) Bethanechol C) Benzoylcholine D) Butyrylcholine

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Question 448

Pseudocholinesterase differs from true cholinesterase in that

A) It does not hydrolyse acetylcholine B) It hydrolyses acetylcholine at a slower rate C) It is more susceptible to inhibition by physostigmine D) It is the only form of circulating cholinesterase

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Question 449

The following cotransmitter is most probably involved in mediating nonadrenergic noncholinergic ( NANC ) relaxation of the gut

A) Neuropeptide Y (NPY) B) Adenosine C) Nitric oxide (NO) D) Kallidin

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Question 450

The cotransmitter may serve the following function/ functions

A) Regulate the release of the primary transmitter from the nerve ending B) Alter postjunctional action of the primary transmitter C) Itself act as an alternative transmitter D) All of the above

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