Heroin (diamorphine) is:O an opioid receptor antagonist.O a long-acting opioid agonist that produces dysphoria.O a drug that is metabolised in humans to morphine.a drug with high liability for physical dependence and low liability for psychological dependence.Question 4Cocaine exerts sympathomimetic activity by:O acting directly as an agonist at alpha 1-adrenoceptors.inhibiting the re-uptake of noradrenaline at axon terminal sympathetic neurons.O inhibiting alpha 1-adrenoceptors.O inhibiting the breakdown of noradrenaline by monoamine oxidase.

3. Heroin Heroin is an analgesic drug derived from morphine. Options : 1. It is a wrong option ,…

Answered: Heroin (diamorphine) is: O an opioid…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter7: The Peripheral Nervous System: Efferent Division

Section: Chapter Questions

Problem 3UC

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______ is released by motor nerve endings onto muscle. Acetylcholine Norepinephrine Dopamine Serotonin
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Epinephrine binds to both β-adrenergic and α-adrenergic receptors. Describe the opposite actions on the effector protein, adenylyl cyclase, elicited by the binding of epinephrine to these two types of receptors. Describe the effect of adding an agonist or antagonist to a β-adrenergic receptor on the activity of adenylyl cyclase.
Carbachol have longer durations of action than Ach, because they have both muscarinic and nicotinic activity. they are not hydrolyzed by AChE. They bind to muscarinic receptors. They show little specificity in their actions O
Buprenorphine is a partial agonist at mu opioid receptors and is used for opioid maintenance treatment (OMT) in patients with opioid use disorder (OUD). Buprenorphine is formulated in a product that contains the mu opioid receptor antagonist, naloxone. What is the purpose of naloxone in this formulation? O To increase the magnitude of response to the partial agonist. O To reduce the likelihood that buprenorphine will be injected intravenously. O To delay the response to buprenorphine. O To provide pain relief to the patient who has OUD.
The catechol system is important for the binding of adrenergic agonists, yet is not required for adrenergic antagonists. Why should this be the case? The active enantiomer of arylpropanolamines is S, yet for the arylethanolamines it is R. What do you think is going on in the binding site? Summarize what a selective noradrenaline reuptake inhibitor does and how it would affect depression.
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Chlorpromazine and Bromocriptine both have the affinity in the dopamine receptors of the Central Nervous System, Chlorpromazine is use to treat schizophrenia and psychosis whereas Bromocriptine is use to treat parkinson’s disease. Explain the action of these drugs in the dopamine receptor and why they have different effects and clinical use, knowing that they both act on the dopamine receptors.
Methamphetamine “highs” often are accompanied by behavioral changes that resemble schizophrenia. Does methamphetamine act as an agonist or antagonist?
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Heroin (diamorphine) is: O an opioid receptor antagonist. O a long-acting opioid agonist that produces dysphoria. O a drug that is metabolised in humans to morphine. a drug with high liability for physical dependence and low liability for psychological dependence.