Cholinergic Transmission Quiz

Which step in cholinergic transmission is the rate-limiting step?

Where are the subtypes of nicotinic receptors found?

What type of receptors are found on the endothelium of many blood vessels?

What is the general pharmacological effect of muscarinic agonists?

Which ion permeability is increased by the activation of the nicotinic ACh ion channel system?

What is the role of presynaptic autoreceptors in cholinergic transmission?

Which step in cholinergic transmission is driven by exchange with H+?

Where do the subtypes of muscarinic receptors occur?

What is the general pharmacological effect of muscarinic antagonists?

What controls the nicotinic ACh ion channel system?

Which type of cholinesterase inhibitor interacts with the anionic site of the phosphorylated enzyme and regenerates the enzyme by displacing the dialkylphosphate residue?

What is the primary enzyme responsible for acetylcholine metabolism at cholinergic synapses?

Which type of cholinesterase inhibitor is found in plasma, liver, and glia and can also hydrolyze acetylcholine?

Which type of cholinesterase inhibitor forms a carbamylated enzyme complex with a lifetime of approximately 20 minutes?

Which type of cholinesterase inhibitor interacts with Gq and leads to an increase in intracellular Ca2+ stores and smooth muscle contraction?

Which type of cholinesterase inhibitor regulates ion channels, specifically increasing K+ permeability and resulting in hyperpolarization and a decrease in heart rate?

Which type of cholinesterase inhibitor is irreversible and interacts only with the esteratic site of the enzyme, leading to permanent inactivation?

Which type of cholinesterase inhibitor is a peripheral and CNS inhibitor of AChE?

Which type of cholinesterase inhibitor is a peripheral inhibitor of AChE?

Which type of cholinesterase inhibitor is used to treat organophosphate toxicity and interacts with the anionic site of the phosphorylated enzyme?

Which autoimmune disorder involves a loss of voltage-sensitive calcium channels on the presynaptic motor nerve terminal?

Which autoimmune disease affects the postsynaptic neuromuscular junction and is characterized by fatigable weakness of skeletal muscles?

Which type of muscles tend to be affected first in Myasthenia Gravis?

What are the major pharmacodynamic properties of competitive NMJ blockers?

How are nondepolarizing and depolarizing NMJ blockers different in terms of pharmacokinetics?

What drug class is used to reverse the effects of NMJ blockers by increasing the concentration of ACh at NMJ synapses?

What is the mechanism of action of sugammadex in reversing the effects of NMJ blockers?

How does genetic variation affect the metabolism of succinylcholine?

What is the duration of paralysis following administration of succinylcholine in individuals with partial deficiency in plasma cholinesterase enzyme activity?

What percentage of the general population carries two pseudocholinesterase gene allele mutations that can produce clinically significant effects from succinylcholine?