The following is a selective α2 adrenoceptor antagonist: A. Prazosin B. Phentolamine C. Yohimbine D. Clonidine

The following is a selective α2 adrenoceptor
antagonist:
A. Prazosin
B. Phentolamine
C. Yohimbine
D. Clonidine
by

1 Answer

Answer :

C. Yohimbine
by

Related questions

The following is a selective α 2 adrenoceptor antagonist: A. Prazosin B. Phentolamine C. Yohimbine D. Clonidine

Description : The following is a selective α 2 adrenoceptor antagonist: A. Prazosin B. Phentolamine C. Yohimbine D. Clonidine

Last Answer : C. Yohimbine

Adrenergic neurone blocking drugs: A. Block the action of adrenaline on neuronal α2 adrenoceptors B. Block both α and β adrenoceptor mediated effects of injected adrenaline C. Do not block any effect of injected adrenaline D. Do not block the effects of sympathetic nerve

Description : Adrenergic neurone blocking drugs: A. Block the action of adrenaline on neuronal α2 adrenoceptors B. Block both α and β adrenoceptor mediated effects of injected adrenaline C. Do not block any effect of injected adrenaline D. Do not block the effects of sympathetic nerve

Last Answer : C. Do not block any effect of injected adrenaline

Adrenergic neurone blocking drugs: A. Block the action of adrenaline on neuronal α2 adrenoceptors B. Block both α and β adrenoceptor mediated effects of injected adrenaline C. Do not block any effect of injected adrenaline D. Do not block the effects of sympathetic nerve stimulation

Description : Adrenergic neurone blocking drugs: A. Block the action of adrenaline on neuronal α2 adrenoceptors B. Block both α and β adrenoceptor mediated effects of injected adrenaline C. Do not block any effect of injected adrenaline D. Do not block the effects of sympathetic nerve stimulation

Last Answer : C. Do not block any effect of injected adrenaline

Used alone the following antihypertensive drug tends to increase cardiac work and can precipitate angina: A. Clonidine B. Hydralazine C. Captopril D. Prazosin

Description : Used alone the following antihypertensive drug tends to increase cardiac work and can precipitate angina: A. Clonidine B. Hydralazine C. Captopril D. Prazosin

Last Answer : B. Hydralazine

The following antihypertensive drug has been found to suppress certain manifestations of morphine withdrawal syndrome and to block postoperative pain when injected intrathecally: A. Prazosin B. Clonidine C. Reserpine D. Ketanserin

Description : The following antihypertensive drug has been found to suppress certain manifestations of morphine withdrawal syndrome and to block postoperative pain when injected intrathecally: A. Prazosin B. Clonidine C. Reserpine D. Ketanserin

Last Answer : B. Clonidine

Rebound hypertension on sudden stoppage of medication is most likely to occur with: A. Hydrochlorothiazide B. Prazosin C. Clonidine D. Lisinopri

Description : Rebound hypertension on sudden stoppage of medication is most likely to occur with: A. Hydrochlorothiazide B. Prazosin C. Clonidine D. Lisinopri

Last Answer : C. Clonidine

Loss of taste sensation can be a side effect of the following antihypertensive drug: A. Clonidine B. Captopril C. Verapamil D. Prazosin

Description : Loss of taste sensation can be a side effect of the following antihypertensive drug: A. Clonidine B. Captopril C. Verapamil D. Prazosin

Last Answer : B. Captopril

Rapid intravenous injection of clonidine causes rise in BP due to: A. Stimulation of vasomotor centre B. Release of noradrenaline from adrenergic nerve endings C. Agonistic action on vascular α2 adrenergic receptors D. Cardiac stimulation

Description : Rapid intravenous injection of clonidine causes rise in BP due to: A. Stimulation of vasomotor centre B. Release of noradrenaline from adrenergic nerve endings C. Agonistic action on vascular α2 adrenergic receptors D. Cardiac stimulation

Last Answer : C. Agonistic action on vascular α2 adrenergic receptors

The α2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine

Description : The α2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine

Last Answer : B. Prejunctional, postjunctional as well as extrajunctional in location

The primary reason for preferring phentolamine as the α adrenergic blocker for performing diagnostic test for pheochromocytoma is: A. It produces rapid and short lasting α-adrenergic blockade B. It equally blocks α1 and α2 adrenoceptors C. It is the most potent α blocker D. It has no additional β adrenergic blocking property

Description : The primary reason for preferring phentolamine as the α adrenergic blocker for performing diagnostic test for pheochromocytoma is: A. It produces rapid and short lasting α-adrenergic blockade B. It equally ... It is the most potent α blocker D. It has no additional β adrenergic blocking property

Last Answer : A. It produces rapid and short lasting α-adrenergic blockade

The primary reason for preferring phentolamine as the α adrenergic blocker for performing diagnostic test for pheochromocytoma is: A. It produces rapid and short lasting α-adrenergic blockade B. It equally blocks α1 and α2 adrenoceptors C. It is the most potent α blocker D. It has no additional β adrenergic blocking property

Description : The primary reason for preferring phentolamine as the α adrenergic blocker for performing diagnostic test for pheochromocytoma is: A. It produces rapid and short lasting α-adrenergic blockade B. It equally ... It is the most potent α blocker D. It has no additional β adrenergic blocking property

Last Answer : A. It produces rapid and short lasting α-adrenergic blockade

Yohimbine is an antagonist of ______ receptors. (a) a1 (b) a2 (c) both (a) and (b) (d) None of the above

Description : Yohimbine is an antagonist of ______ receptors. (a) a1 (b) a2 (c) both (a) and (b) (d) None of the above

Last Answer : Ans: B

Losartan is a: A. Selective AT1 receptor antagonist B. Selective AT2 receptor antagonist C. Nonselective AT1 + AT2 receptor antagonist D. AT1 receptor partial agonist

Description : Losartan is a: A. Selective AT1 receptor antagonist B. Selective AT2 receptor antagonist C. Nonselective AT1 + AT2 receptor antagonist D. AT1 receptor partial agonist

Last Answer : A. Selective AT1 receptor antagonist

Choose the selective estrogen receptor modulator that is useful in dysfunctional uterine bleeding by acting as estrogen antagonist in endometrium, but does not alter vaginal epithelium or cervical mucus: A. Ormeloxifene B. Tamoxifen C. Centchroman D. Danazol

Description : Choose the selective estrogen receptor modulator that is useful in dysfunctional uterine bleeding by acting as estrogen antagonist in endometrium, but does not alter vaginal epithelium or cervical mucus: A. Ormeloxifene B. Tamoxifen C. Centchroman D. Danazol

Last Answer : . Ormeloxifen

Choose the correct statement about drotaverine: A. It is a smooth muscle antispasmodic acting by non-anticholinergic mechanisms B. It is a papaverine congener used in peripheral vascular diseases C. It is a synthetic atropine substitute used to control diarrhoea D. It is a M1/M3 selective antagonist used for spastic constipation

Description : Choose the correct statement about drotaverine: A. It is a smooth muscle antispasmodic acting by non-anticholinergic mechanisms B. It is a papaverine congener used in peripheral vascular diseases C. It ... used to control diarrhoea D. It is a M1/M3 selective antagonist used for spastic constipation

Last Answer : A. It is a smooth muscle antispasmodic acting by non-anticholinergic mechanisms

A drug that decreases blood pressure and has analgesic and spasmolytic effects when given intrathecally is (a) Atenolol (b) Clonidine (c) Morphine (d) Nitroprusside (e) Prazosin

Description : A drug that decreases blood pressure and has analgesic and spasmolytic effects when given intrathecally is (a) Atenolol (b) Clonidine (c) Morphine (d) Nitroprusside (e) Prazosin

Last Answer : Ans: B

Phentolamine test is considered positive for pheochromocytoma if there is a: A. Rise in BP by more than 35 mm Hg systolic and 25 mm Hg diastolic B. Rise in systolic but fall in diastolic BP C. Fall in both systolic and diastolic BP by less than 20 mm Hg D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Description : Phentolamine test is considered positive for pheochromocytoma if there is a: A. Rise in BP by more than 35 mm Hg systolic and 25 mm Hg diastolic B. Rise in systolic but fall in diastolic BP C. Fall in both ... 20 mm Hg D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Last Answer : D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Phentolamine test is considered positive for pheochromocytoma if there is a: A. Rise in BP by more than 35 mm Hg systolic and 25 mm Hg diastolic B. Rise in systolic but fall in diastolic BP C. Fall in both systolic and diastolic BP by less than 20 mm Hg D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Description : Phentolamine test is considered positive for pheochromocytoma if there is a: A. Rise in BP by more than 35 mm Hg systolic and 25 mm Hg diastolic B. Rise in systolic but fall in diastolic BP C. Fall in both ... 20 mm Hg D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Last Answer : D. Fall in BP by more than 35 mm Hg systolic and more than 25 mm Hg diastolic

Beneficial effects of β-adrenoceptor blockers in CHF include the following except: A. Antagonism of ventricular wall stress enhancing action of sympathetic overactivity B. Antagonism of vasoconstriction due to sympathetic overactivity C. Prevention of pathological remodeling of ventricular myocardium D. Prevention of dangerous cardiac arrhythmias

Description : Beneficial effects of β-adrenoceptor blockers in CHF include the following except: A. Antagonism of ventricular wall stress enhancing action of sympathetic overactivity B. Antagonism ... Prevention of pathological remodeling of ventricular myocardium D. Prevention of dangerous cardiac arrhythmias

Last Answer : B. Antagonism of vasoconstriction due to sympathetic overactivity

The β3 adrenoceptor differs from the other subtypes of β receptor in that it: A. Is not blocked by the conventional doses of propranolol B. Is located primarily in the heart C. Regulates blood sugar level D. Is not coupled to G proteins

Description : The β3 adrenoceptor differs from the other subtypes of β receptor in that it: A. Is not blocked by the conventional doses of propranolol B. Is located primarily in the heart C. Regulates blood sugar level D. Is not coupled to G proteins

Last Answer : A. Is not blocked by the conventional doses of propranolol

The β 3 adrenoceptor differs from the other subtypes of β receptor in that it: A. Is not blocked by the conventional doses of propranolol B. Is located primarily in the heart C. Regulates blood sugar level D. Is not coupled to G proteins

Description : The β 3 adrenoceptor differs from the other subtypes of β receptor in that it: A. Is not blocked by the conventional doses of propranolol B. Is located primarily in the heart C. Regulates blood sugar level D. Is not coupled to G proteins

Last Answer : A. Is not blocked by the conventional doses of propranolol

The following antihypertensive combination is irrational, and therefore should not be used: A. Nifedipine + hydralazine B. Amlodipine + atenolol C. Enalapril + clonidine D. Enalapril + hydrochlorothiazide

Description : The following antihypertensive combination is irrational, and therefore should not be used: A. Nifedipine + hydralazine B. Amlodipine + atenolol C. Enalapril + clonidine D. Enalapril + hydrochlorothiazide

Last Answer : TA. Nifedipine + hydralazine

The following antihypertensive drug tends to lower plasma renin activity: A. Clonidine B. Hydralazine C. Nifedipine D. Captopril

Description : The following antihypertensive drug tends to lower plasma renin activity: A. Clonidine B. Hydralazine C. Nifedipine D. Captopril

Last Answer : A. Clonidine

The following antihypertensive is used topically to treat alopacia areata: A. Hydralazine B. Prazosin C. Minoxidil D. Indapamide

Description : The following antihypertensive is used topically to treat alopacia areata: A. Hydralazine B. Prazosin C. Minoxidil D. Indapamide

Last Answer : C. Minoxidil

Methyldopa differs from clonidine in the following respect: A. It is less likely to cause rebound hypertension on sudden discontinuation B. It does not reduce plasma renin activity C. It has a central as well as peripheral site of antihypertensive action D. It does not produce central side effect

Description : Methyldopa differs from clonidine in the following respect: A. It is less likely to cause rebound hypertension on sudden discontinuation B. It does not reduce plasma renin activity C. It has a central as well as peripheral site of antihypertensive action D. It does not produce central side effect

Last Answer : A. It is less likely to cause rebound hypertension on sudden discontinuation

The following drug has been found to improve urine flow in elderly males with benign prostatic hypertrophy: A. Nifedipine B. Prazosin C. Disopyramide D. Imipramine

Description : The following drug has been found to improve urine flow in elderly males with benign prostatic hypertrophy: A. Nifedipine B. Prazosin C. Disopyramide D. Imipramine

Last Answer : B. Prazosin

The following antihypertensive drug has a favourable effect on plasma lipid profile: A. Prazosin B. Propranolol C. Hydrochlorothiazide D. Furosemide

Description : The following antihypertensive drug has a favourable effect on plasma lipid profile: A. Prazosin B. Propranolol C. Hydrochlorothiazide D. Furosemide

Last Answer : A. Prazosin

Which of the following feature(s) limit(s) the use of prazosin as a first line antihypertensive drug: A. Higher incidence of disturbing side effects B. Unfavourable metabolic effects C. Development of tolerance when used alone D. Both ‘A’ and ‘C’ are correct

Description : Which of the following feature(s) limit(s) the use of prazosin as a first line antihypertensive drug: A. Higher incidence of disturbing side effects B. Unfavourable metabolic effects C. Development of tolerance when used alone D. Both ‘A’ and ‘C’ are correct

Last Answer : D. Both ‘A’ and ‘C’ are correct

Tricyclic antidepressants abolish the antihypertensive action of the following drug: A. Enalapril B. Clonidine C. Atenolol D. Diltiazem

Description : Tricyclic antidepressants abolish the antihypertensive action of the following drug: A. Enalapril B. Clonidine C. Atenolol D. Diltiazem

Last Answer : B. Clonidine

A. It is a clonidine congener used in spasticity due to stroke or spinal injury B. It reduces muscle tone by activating GABAB receptors C. It inhibits release of excitatory amino-acids in spinal interneurones D. It reduces muscle spasms without producing weaknes

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Last Answer : B. It reduces muscle tone by activating GABAB receptors

Which of the following is a steroid 5α-reductase inhibitor that has been found useful in benign prostatic hypertrophy and male pattern baldness: A. Flutamide B. Finasteride C. Prazosin D. Minoxidil

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Last Answer : B. Finasteride

In a patient of diabetes mellitus maintained on insulin therapy, administration of the following drug can vitiate glycaemia control: A. Prednisolone B. Prazosin C. Paracetamol D. Phenytoin

Description : In a patient of diabetes mellitus maintained on insulin therapy, administration of the following drug can vitiate glycaemia control: A. Prednisolone B. Prazosin C. Paracetamol D. Phenytoin

Last Answer : A. Prednisolone

Select the drug which can improve urinary flow rate in benign prostatic hypertrophy without affecting prostate size: A. Amphetamine B. Prazosin C. Finasteride D. Goserelin

Description : Select the drug which can improve urinary flow rate in benign prostatic hypertrophy without affecting prostate size: A. Amphetamine B. Prazosin C. Finasteride D. Goserelin

Last Answer : B. Prazosin

Prazosin is an effective antihypertensive while nonselective α adrenergic blockers are not because: A. It is the only orally active α blocker B. It improves plasma lipid profile C. It does not concurrently enhance noradrenaline release D. It improves urine flow in males with prostatic hypertrophy

Description : Prazosin is an effective antihypertensive while nonselective α adrenergic blockers are not because: A. It is the only orally active α blocker B. It improves plasma lipid profile C. It does not concurrently enhance noradrenaline release D. It improves urine flow in males with prostatic hypertrophy

Last Answer : C. It does not concurrently enhance noradrenaline release

Apraclonidine is a clonidine congener which is used: A. To suppress opioid withdrawal syndrome B. To suppress menopausal syndrome C. As Analgesic D. To reduce intraocular tension

Description : Apraclonidine is a clonidine congener which is used: A. To suppress opioid withdrawal syndrome B. To suppress menopausal syndrome C. As Analgesic D. To reduce intraocular tension

Last Answer : D. To reduce intraocular tension

Interaction between the following pair of drugs can be avoided by making suitable adjustments: A. Levodopa and metoclopramide B. Furosemide and indomethacin C. Tetracyclines and ferrous sulfate D. Clonidine and chlorpromazine

Description : Interaction between the following pair of drugs can be avoided by making suitable adjustments: A. Levodopa and metoclopramide B. Furosemide and indomethacin C. Tetracyclines and ferrous sulfate D. Clonidine and chlorpromazine

Last Answer : C. Tetracyclines and ferrous sulfate

Select the drug which can improve urinary flow rate in benign prostatic hypertrophy without affecting prostate size: A. Amphetamine B. Prazosin C. Finasteride D. Goserelin

Description : Select the drug which can improve urinary flow rate in benign prostatic hypertrophy without affecting prostate size: A. Amphetamine B. Prazosin C. Finasteride D. Goserelin

Last Answer : B. Prazosin

Prazosin is an effective antihypertensive while nonselective α adrenergic blockers are not because: A. It is the only orally active α blocker B. It improves plasma lipid profile C. It does not concurrently enhance noradrenaline release D. It improves urine flow in males with prostatic hypertrophy

Description : Prazosin is an effective antihypertensive while nonselective α adrenergic blockers are not because: A. It is the only orally active α blocker B. It improves plasma lipid profile C. It does not concurrently enhance noradrenaline release D. It improves urine flow in males with prostatic hypertrophy

Last Answer : C. It does not concurrently enhance noradrenaline release

The α 2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine

Description : The α 2 adrenoceptors are: A. Located exclusively on the adrenergic nerve endings B. Prejunctional, postjunctional as well as extrajunctional in location C. Selectively activated by phenylephrine D. Selectively blocked by clonidine

Last Answer : B. Prejunctional, postjunctional as well as extrajunctional in location

Apraclonidine is a clonidine congener which is used: A. To suppress opioid withdrawal syndrome B. To suppress menopausal syndrome C. As Analgesic D. To reduce intraocular tension

Description : Apraclonidine is a clonidine congener which is used: A. To suppress opioid withdrawal syndrome B. To suppress menopausal syndrome C. As Analgesic D. To reduce intraocular tension

Last Answer : D. To reduce intraocular tension

Bradykinin and angiotensin II have the following feature common to both: A. They both cause fall in BP B. They both are degraded by Kininase II C. Their precursor proteins are plasma α2 globulins D. They both release aldosterone from adrenal cortex

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Last Answer : C. Their precursor proteins are plasma α2 globulins

The following is a skeletal muscle relaxant that acts as a central α2 adrenergic agonist: A. Tizanidine B. Brimonidine C. Chlormezanone D. Quinine

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Last Answer : A. Tizanidine

The following is an α2 adrenergic agonist used as eyedrops to lower intraocular pressure: A. Brinzolamide B. Bambuterol C. Brimonidine D. Latanoprost

Description : The following is an α2 adrenergic agonist used as eyedrops to lower intraocular pressure: A. Brinzolamide B. Bambuterol C. Brimonidine D. Latanoprost

Last Answer : C. Brimonidine

Currently, the first choice drug for open angle glaucoma is: A. Miotic eye drops B. Ocular α2 adrenergic agonists C. Ocular prostaglandin analogues D. Ocular β adrenergic blockers

Description : Currently, the first choice drug for open angle glaucoma is: A. Miotic eye drops B. Ocular α2 adrenergic agonists C. Ocular prostaglandin analogues D. Ocular β adrenergic blockers

Last Answer : D. Ocular β adrenergic blockers

The bladder trigone and prostatic muscles are relaxed by: A. Adrenergic α1 agonists B. Adrenergic α1 antagonists C. Adrenergic α2 agonists D. Adrenergic α2 antagonists

Description : The bladder trigone and prostatic muscles are relaxed by: A. Adrenergic α1 agonists B. Adrenergic α1 antagonists C. Adrenergic α2 agonists D. Adrenergic α2 antagonists

Last Answer : B. Adrenergic α1 antagonists

Choose the correct statement about drotaverine: A. It is a smooth muscle antispasmodic acting by non-anticholinergic mechanisms B. It is a papaverine congener used in peripheral vascular diseases C. It is a synthetic atropine substitute used to control diarrhoea D. It is a M1/M3 selective antagonist used for spastic constipation

Description : Choose the correct statement about drotaverine: A. It is a smooth muscle antispasmodic acting by non-anticholinergic mechanisms B. It is a papaverine congener used in peripheral vascular diseases C. It ... used to control diarrhoea D. It is a M1/M3 selective antagonist used for spastic constipation

Last Answer : A. It is a smooth muscle antispasmodic acting by non-anticholinergic mechanisms

Choose the correct statement about ondansetron: A. It is a dopamine D2 receptor antagonist B. It suppresses postoperative nausea and vomiting C. It is the most effective antiemetic for motion sickness D. It is not effective by oral route

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Last Answer : B. It suppresses postoperative nausea and vomitin

The following is true of clopidogrel except: A. It is a GPIIb/IIIa receptor antagonist B. It inhibits fibrinogen induced platelet aggregation C. It is indicated for prevention of stroke in patients with transient ischaemic attacks D. It is a prodrug

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Select the opioid antagonist that is preferred for long term opioid blockade therapy of post addicts: A. Nalorphine B. Naloxone C. Naltrexone D. Nalbuphine

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Last Answer : C. Naltrexone