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NEET MDS Quiz - Practice Test
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Practice Test

Pharmacology - 3 Questions

1
Pharmacology

Ethosuximide is the drug of choice for treatment of ? 

1) Generalized tonic clonic seizures 
2) Absence seizures 
3) Simple partial seizures 
4) Complex partial seizures

📝 Explanation:

Ethosuximide is the drug of choice for treatment of absence seizures. 

Other drugs used in the management of absence seizures are valproic acid, lamotrigine and clonazepam.

2
Pharmacology

Which one of the following drugs increases gastrointestinal motility?

1)  Glycopyrrolate.
2)  Atropine.
3)  Neostigmine.
4)  Fentanyl.

📝 Explanation:

Synthetic opioids, sharing properties of opium and morphine, include meperidine, propoxyphene, diphenoxylate, fentanyl, buprenorphine, methadone, and pentazocine. Various opiate effects are analgesia, respiratory depression, constipation, and euphoria.

Fentanyl (80 to 100 times more powerful than morphine) is especially dangerous.

Atropine blocks the muscarinic receptors. Atropine decreases gastrointestinal tract motility and secretion and causes constipation.

Although various derivatives and congeners of atropine (such as propantheline, isopropamide, and glycopyrrolate) have been advocated in patients with peptic ulcer or with diarrheal syndromes

Neostigmine is Cholinesterase inhibitors that enhance the effects of parasympathetic stimulation and leads to reversal of intoxication by agents with a anticholinergic action

3
Pharmacology
Morphine causes vomiting by 1. stimulation of the no dose ganglion of the vagus 2. direct stimulation of the gastrointestinal musculature 3. stimulation of the medullary chemo receptor trigger zone 4. a direct irritant action on the gastric mucosa.

📝 Explanation:

Morphine causes vomiting by stimulation of the medullary chemo receptor trigger zone

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