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Questions and Answers
What is the primary function of the parasympathetic nervous system?
What is the primary function of the parasympathetic nervous system?
- To stimulate high energy functions
- To relax the body and inhibit high energy functions (correct)
- To control the sympathetic nervous system
- To regulate the autonomic nervous system
Which neurotransmitter is commonly associated with the sympathetic nervous system?
Which neurotransmitter is commonly associated with the sympathetic nervous system?
- Serotonin
- Dopamine
- Norepinephrine (correct)
- Acetylcholine
What type of receptors are activated by acetylcholine in the parasympathetic nervous system?
What type of receptors are activated by acetylcholine in the parasympathetic nervous system?
- Beta receptors
- Nicotinic and muscarinic receptors (correct)
- Alpha receptors
- Cholinergic receptors
What is the effect of cholinesterase on acetylcholine?
What is the effect of cholinesterase on acetylcholine?
Which of the following choline esters is most resistant to hydrolysis by cholinesterase?
Which of the following choline esters is most resistant to hydrolysis by cholinesterase?
What is the effect of the β-methyl group on the potency of choline esters at nicotinic receptors?
What is the effect of the β-methyl group on the potency of choline esters at nicotinic receptors?
What is the characteristic of Edrophonium and the carbamates as inhibitors of acetylcholinesterase?
What is the characteristic of Edrophonium and the carbamates as inhibitors of acetylcholinesterase?
Which of the following is used to treat organophosphorus poisoning?
Which of the following is used to treat organophosphorus poisoning?
What is the receptor selectivity of a drug dependent on?
What is the receptor selectivity of a drug dependent on?
What is the primary use of Tacrine?
What is the primary use of Tacrine?
Which of the following is an example of an alpha2 adrenergic receptor agonist?
Which of the following is an example of an alpha2 adrenergic receptor agonist?
What is the term for a drug's ability to bind preferentially to one subgroup of receptors at concentrations too low to interact extensively with another subgroup?
What is the term for a drug's ability to bind preferentially to one subgroup of receptors at concentrations too low to interact extensively with another subgroup?
What is the characteristic of catecholamines that makes them subject to inactivation by catechol-O-methyltransferase (COMT)?
What is the characteristic of catecholamines that makes them subject to inactivation by catechol-O-methyltransferase (COMT)?
What is the effect of increasing the size of alkyl substituents on the amino group of catecholamines?
What is the effect of increasing the size of alkyl substituents on the amino group of catecholamines?
What is a characteristic of sympathomimetic drugs known as catecholamines?
What is a characteristic of sympathomimetic drugs known as catecholamines?
What is the effect of the absence of one or both –OH groups on the phenyl ring of catecholamines?
What is the effect of the absence of one or both –OH groups on the phenyl ring of catecholamines?
What is the characteristic of ephedrine and amphetamine that distinguishes them from catecholamines?
What is the characteristic of ephedrine and amphetamine that distinguishes them from catecholamines?
What is the mechanism of action of direct-acting sympathomimetic drugs like catecholamines?
What is the mechanism of action of direct-acting sympathomimetic drugs like catecholamines?
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