Q- Which one of the following actions is produced by muscarinic cholinergic agonists?
A- Activation of inhibitory G protein
B- Decreased IP3 production
C- Decreased release of intracellular calcium
D- Inhibition of phospholipase C
A- Activation of inhibitory G protein- Muscarinic cholinergic agonists activate inhibitory G protein, activate phospholipase C, and increase IP3 production and release of intracellular calcium.
Q- Organophosphorus poisoning can be treated with which of the following agents?
A- Atenolol
B- Atropine
C- Ipratropium bromide
D- Physostigmine
B- Atropine- It blocks the action of acetyl choline peripherally and though CNS. Atenolol has no role in this case. Ipratropium bromide doesn’t penetrate BBB and physostigmine would worsen the case.
Q- Which of the following is the mechanism of action of pioglitazone in diabetic patients?
A- Decreases insulin breakdown
B- Increases glucose excretion
C- Increases glucose uptake in muscle cells
D- Increases insulin release
C- Increases glucose uptake in muscle cells- This medication does not affect insulin release or degradation but it increases glucose uptake by adipose and muscle tissues.
5 thoughts on “Pharmacology MCQs- 281”
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Thank you sir
You are very welcome dear Dr. I wish you the best in your medical journey.
Thank you sir for us
I am glad I help. Thank you Dr Messiah
I have passed one out of 3. So 33% thanks for teaching us