16 Questions
What is the lethal dosage of Atropine in adults?
100mg
What is the antidote for Atropine overdose?
Physostigmine
What is the potency of Homatropine compared to Atropine?
1/10 as potent as Atropine
What is the primary use of Scopolamine?
As an alternative to Atropine in allergic patients
What is the duration of Cyclopentolate's mydriatic and cycloplegic effect?
Less than 24 hours
What is a common central nervous system effect of Cyclopentolate?
Drowsiness
What is the commercial concentration of Tropicamide?
0.5% and 1.0%
What is the clinical use of Tropicamide?
Dilated fundus examination
What is a common ocular side effect of Atropine?
All of the above
What is the primary difference between Atropine and Homatropine?
Potency
Where does the efferent oculo-parasympathetic pathway originate?
E-W nucleus
What is the neurotransmitter for both pre and post-ganglionic synapses?
Acetylcholine
What is the name of the membrane-bound device used to deliver Pilocarpine?
Ocusertpilo-40
What is the mechanism of indirect Parasympathomimetics?
Blocking the breakdown of acetylcholine
What is the name of the autoimmune disorder that affects voltage-gated calcium channels?
Lambert-Eaton Myasthenic Syndrome
What is the name of the ocular cholinergic antagonist mentioned in the text?
Atropine
This quiz covers the efferent oculo-parasympathetic pathway, including the origin, preganglionic fibers, and post-ganglionic effector structures. It also explores ocular cholinergic agonists and antagonists, including their effects on the iris, ciliary muscle, and M3 receptors. Test your knowledge of this topic!
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