Nicotine acts as a stimulant, because it mimics the effect of(a) testosterone (b) dopamine (c) thyroxine (d) acetylcholine.

Nicotine acts as a stimulant, because it mimics the
effect of
(a) testosterone (b) dopamine
(c) thyroxine (d) acetylcholine.
by

1 Answer

Answer :

(d) acetylcholine.
by

Related questions

The nurse teaches the patient with peripheral vascular disease to refrain from smoking because nicotine causes a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the extremities. b) slowed heart rate. Nicotine has stimulant effects. c) depression of the cough reflex. Nicotine does not suppress cough. Smoking irritates the bronchial tree, causing coughing. d) diuresis. Nicotine does not cause diuresis.

Description : The nurse teaches the patient with peripheral vascular disease to refrain from smoking because nicotine causes a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the ... the bronchial tree, causing coughing. d) diuresis. Nicotine does not cause diuresis.

Last Answer : a) vasospasm. Nicotine causes vasospasm and can thereby dramatically reduce circulation to the extremities.

Compared to a bull a bullock is docile because of (a) higher levels of cortisone (b) lower levels of blood testosterone (c) lower levels of adrenaline/noradrenaline in its blood (d) higher levels of thyroxine.

Description : Compared to a bull a bullock is docile because of (a) higher levels of cortisone (b) lower levels of blood testosterone (c) lower levels of adrenaline/noradrenaline in its blood (d) higher levels of thyroxine.

Last Answer : (b) lower levels of blood testosterone

Though bromocriptine acts directly on dopamine receptors, it is used in parkinsonism only as a supplement to levodopa because: A. It has low efficacy B. It produces marked dyskinesias C. Used alone, its effective doses produce intolerable side effects D. Its therapeutic effect takes long time to develop

Description : Though bromocriptine acts directly on dopamine receptors, it is used in parkinsonism only as a supplement to levodopa because: A. It has low efficacy B. It produces marked dyskinesias C. ... its effective doses produce intolerable side effects D. Its therapeutic effect takes long time to develop

Last Answer : C. Used alone, its effective doses produce intolerable side effect

The neurotransmitter agent that is normally released in the sinoatrial node of the heart in response to a blood pressure increase is (a) Acetylcholine (b) Dopamine (c) Epinephrine (d) Glutamate (e) Norepinephrine

Description : The neurotransmitter agent that is normally released in the sinoatrial node of the heart in response to a blood pressure increase is (a) Acetylcholine (b) Dopamine (c) Epinephrine (d) Glutamate (e) Norepinephrine

Last Answer : Ans: A

The following are true about the neurotransmitters: a. acetylcholine is inactivated mainly by presynaptic reuptake b. tyrosine is essential for the formation of dopamine c. noradrenaline is inactivated mainly by hydrolysis d. adrenaline is formed from methylation of the noradrenaline

Description : The following are true about the neurotransmitters: a. acetylcholine is inactivated mainly by presynaptic reuptake b. tyrosine is essential for the formation of dopamine c. noradrenaline is inactivated mainly by hydrolysis d. adrenaline is formed from methylation of the noradrenaline

Last Answer : adrenaline is formed from methylation of the noradrenaline

The following enzymes on the left are responsible for the synthesis of the neurotransmitters on the right: a. monoamine oxidase: noradrenaline b. cholinesterase: acetylcholine c. catechol-o-methyl transferase: dopamine d. dopa decarboxylase: adrenaline

Description : The following enzymes on the left are responsible for the synthesis of the neurotransmitters on the right: a. monoamine oxidase: noradrenaline b. cholinesterase: acetylcholine c. catechol-o-methyl transferase: dopamine d. dopa decarboxylase: adrenaline

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Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter (a) acetylcholine (b) norepinephrine (c) dopamine (d) GABA.

Description : Parkinson’s disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter (a) acetylcholine (b) norepinephrine (c) dopamine (d) GABA.

Last Answer : c) dopamine

Alzheimer’s disease in humans is associated with the deficiency of (a) glutamic acid (b) acetylcholine (c) gamma aminobutyric acid (GABA) (d) dopamine.

Description : Alzheimer’s disease in humans is associated with the deficiency of (a) glutamic acid (b) acetylcholine (c) gamma aminobutyric acid (GABA) (d) dopamine.

Last Answer : b) acetylcholine

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Last Answer : Correct Answer: 3) Decrease in receptors for acetylcholine

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Which one of the following can be blocked by atropine? (a) Decreased blood pressure caused by hexamethonium (b) Increased blood pressure caused by nicotine (c) Increased skeleton muscle strength caused by neostigmine (d) Tachycardia caused by exercise (e) Tachycardia caused by infusion of acetylcholine

Description : Which one of the following can be blocked by atropine? (a) Decreased blood pressure caused by hexamethonium (b) Increased blood pressure caused by nicotine (c) Increased skeleton muscle ... by neostigmine (d) Tachycardia caused by exercise (e) Tachycardia caused by infusion of acetylcholine

Last Answer : Ans: E

A mast cell (or mastocyte) is a resident cells of several types of tissues and contains many granules rich in_______. a) Acetylcholine b) Nicotine c) Epinephrine d) Histamine e) Histadine

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The hormone that stimulates heart beat is – (1) Thyroxine (2) Gastrin (3) Glycogen (4) Dopamine

Description : The hormone that stimulates heart beat is – (1) Thyroxine (2) Gastrin (3) Glycogen (4) Dopamine

Last Answer : (1) Thyroxine Explanation: Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland. It plays vital roles in digestion, heart and muscle function, brain development and ... and cardiac output and also promotes vasodilation, which leads to enhanced blood flow to many organs.

The hormone that stimulates heart beat is : (1) Thyroxine (2) Gastrin (3) Glycogen (4) Dopamine

Description : The hormone that stimulates heart beat is : (1) Thyroxine (2) Gastrin (3) Glycogen (4) Dopamine

Last Answer : Thyroxine

Which one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

Description : Which one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

Last Answer : (1) Thyroxine Explanation: Thyroxine is produced by attaching iodine atoms to the ring structures of this protein's tyrosine residues; thyroxine (T4) contains four iodine atoms

Blood pressure may be increased by the excessive secretion of (1) Thyroxine (2) Testosterone (3) Estradiol (4) Estrol

Description : Blood pressure may be increased by the excessive secretion of (1) Thyroxine (2) Testosterone (3) Estradiol (4) Estrol

Last Answer : (1) Thyroxine Explanation: With its excess secretion, also known as hyper secretion, thyroxin (T4) causes an increased heart rate, high blood pressure, possible palpitations, and could lead to heart failure. It is related to hyperthyroidism.

Which one of the following hormones contains iodine? (1) Thyroxine (2) Testosterone (3) Insulin (4) Adrenaline

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Last Answer : (1) Thyroxine Explanation: Thyroxine is produced by attaching iodine atoms to the ring structures of this protein's tyrosine residues; thyroxine (T4) contains four iodine atoms, while triiodothyronine (T3), otherwise identical to T4, has one less iodine atom per molecule.

Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)?(a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

Description : Which one of the following pairs of hormones are the examples of those that can easily pass through the cell membrane of the target cell and bind to a receptor inside it (mostly in the nucleus)? (a) Insulin, glucagon (b) Thyroxine, insulin (c) Somatostatin, oxytocin (d) Cortisol, testosterone

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Secretion of progesterone by corpus luteum is initiated by (a) testosterone (b) thyroxine (c) MSH (d) LH.

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Blood pressure may be increased by the excessive secretion of (1) Thyroxine (2) Testosterone (3) Estradiol (4) Estrol

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The following is true about entacapone except: A. It acts by inhibiting degradation of dopamine in the brain B. If prolongs the therapeutic effect of levodopacarbidopa in parkinsonism C. It can accentuate levodopa induced dyskinesias D. It can cause diarrhoea as a side effec

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A sympathomimetic amine that acts almost exclusively by releasing noradrenaline from the nerve endings is (a) Ephedrine (b) Dopamine (c) Isoprenaline (d) Tyramine

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A sympathomimetic amine that acts almost exclusively by releasing noradrenaline from the nerve endings is: A. Ephedrine B. Dopamine C. Isoprenaline D. Tyramine

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All the following statements about FSH are true except (A) It is a tropic hormone secreted by anterior pituitary (B) Its secretion is increased by gonadotropin releasing hormone (C) It acts on Sertoli cells (D) It increases the synthesis of testosterone

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From the following, name the type of mimicry by which an acceptable, palatable insect mimics an unfavorable, noxious insec for protection. a) Batesian mimicry (pron: BATE-see-an MIM-i-cree) b) Mullerian mimicry (pron: myou-LER-ee-an MIM-i-cree) c) Femmes fatalles strategy (pron: fem fa-TAL) d) Monarchial mimicry

Description : From the following, name the type of mimicry by which an acceptable, palatable insect mimics an unfavorable, noxious insec for protection. a) Batesian mimicry (pron: BATE-see-an MIM-i-cree) b) Mullerian ... -ee-an MIM-i-cree) c) Femmes fatalles strategy (pron: fem fa-TAL) d) Monarchial mimicry

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Which of the following statement(s) is/are true concerning pharmacologic agents used in the treatment of shock? a. The primary difference between dopamine and dobutamine is the absence of significant a adrenergic activity b. The renal and mesenteric vasoconstrictive effects of norepinephrine complicate and sometimes restrict its use c. The apparent paradoxical use of vasodilators, such as nitroprusside, in shock is indicated as a means to augment cardiac function d. Isoproterenol with its potent b-adrenergic effect, is a particularly useful agent in the treatment of all forms of shock

Description : Which of the following statement(s) is/are true concerning pharmacologic agents used in the treatment of shock? a. The primary difference between dopamine and dobutamine is the absence of significant a ... b-adrenergic effect, is a particularly useful agent in the treatment of all forms of shock

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The following is true of bupropion except: A. It inhibits dopamine reuptake along with inhibiting noradrenaline reuptake B. It produces sedation as a side effect C. It is being used as an aid for smoking cessation D. It is likely to produce seizures in overdose

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The primary action by which entacapone and tolcapone enhance the therapeutic effect of levodopa-carbidopa in parkinsonism is: A. Inhibition of levodopa methylation in the liver B. Inhibition of dopamine methylation in the brain C. Inhibition of oxidative deamination of dopamine in the brain D. Facilitation of active transport of levodopa across brain capillaries

Description : The primary action by which entacapone and tolcapone enhance the therapeutic effect of levodopa-carbidopa in parkinsonism is: A. Inhibition of levodopa methylation in the liver B. Inhibition of ... of dopamine in the brain D. Facilitation of active transport of levodopa across brain capillaries

Last Answer : A. Inhibition of levodopa methylation in the liver

In the treatment of parkinsonism, bromocriptine differs from levodopa in the following respects except: A. It does not need conversion to an active metabolite B. It has a longer duration of action C. It activates dopamine D2 receptors, with little/antagonistic action on D1 receptors D. It does not produce behavioral/psychiatric side effect

Description : In the treatment of parkinsonism, bromocriptine differs from levodopa in the following respects except: A. It does not need conversion to an active metabolite B. It has a longer duration of ... with little/antagonistic action on D1 receptors D. It does not produce behavioral/psychiatric side effect

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Description : Histamine H2 blockers attenuate the gastric secretory response to acetylcholine and pentagastrin as well because: A. H2 blockers block gastric mucosal cholinergic and gastrin receptors as well B. H2 ... acetylcholine and gastrin all act through the phospholipase C-IP3:DAG pathway in gastric mucosa

Last Answer : C. Acetylcholine and gastrin act partly by releasing histamine in gastric mucosa

The organophosphates produce irreversible inhibition of cholinesterase because: A. They bind to an allosteric site of the enzyme resulting in unfavourable conformation of esteratic site to bind acetylcholine B. Regeneration time of the phosphorylated enzyme is longer than the turnover time of the enzyme molecules C. Phosphorylation results in rapid degradation of enzyme molecules D. They are neither metabolized nor excreted from the body

Description : The organophosphates produce irreversible inhibition of cholinesterase because: A. They bind to an allosteric site of the enzyme resulting in unfavourable conformation of esteratic site to bind ... degradation of enzyme molecules D. They are neither metabolized nor excreted from the body

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The organophosphates produce irreversible inhibition of cholinesterase because: A. They bind to an allosteric site of the enzyme resulting in unfavourable conformation of esteratic site to bind acetylcholine B. Regeneration time of the phosphorylated enzyme is longer than the turnover time of the enzyme molecules C. Phosphorylation results in rapid degradation of enzyme molecules D. They are neither metabolized nor excreted from the body

Description : The organophosphates produce irreversible inhibition of cholinesterase because: A. They bind to an allosteric site of the enzyme resulting in unfavourable conformation of esteratic site to bind ... degradation of enzyme molecules D. They are neither metabolized nor excreted from the body

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Acetylcholine has no therapeutic application because: A. None of its actions are beneficial in any condition B. Its effects are transient C. It produces wide spread actions affecting many organs D. Both ‘B’ and ‘C’ are correct

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Assertion : Thyroxine shows calorigenic effect. Reason : Thyroxine shows calorigenic effect. Reason : Thyroxine increases catabolism, produces energy

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Effect of thyroxine on B.M.R is

Description : Effect of thyroxine on B.M.R is

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