Autonomic Nervous System Pharmacology: Interactive Learning Quizzes

Question 1

Which drug competitively blocks muscarinic cholinergic receptors?

Accepted Answer

Atropine

Answer

Acetylcholine

Answer

Pilocarpine

Answer

Neostigmine

Question 2

Which of these drugs is a non-selective beta-blocker, blocking both beta-1 and beta-2 receptors?

Accepted Answer

Propranolol

Answer

Atenolol

Answer

Metoprolol

Answer

Salmeterol

Question 3

Which muscarinic cholinoreceptor agonist is used to treat urinary incontinence?

Accepted Answer

Bethanechol

Answer

Atropine

Answer

Propranolol

Answer

Salbutamol

Question 4

Which of the following drugs is a commonly used beta-adrenergic agonist for treating asthma?

Accepted Answer

Salbutamol

Answer

Acetylcholine

Answer

Dopamine

Question 5

In the treatment of benign prostatic hyperplasia (BPH), which of these is a selective alpha-1 adrenoreceptor antagonist?

Accepted Answer

Terazosin

Answer

Phenoxybenzamine

Answer

Propranolol

Answer

Salbutamol

Question 6

Which of the following is a common sign or symptom of excessive sympathetic nervous system activity?

Accepted Answer

Rapid heart rate (tachycardia)

Answer

Slow heart rate (bradycardia)

Answer

Low blood pressure (hypotension)

Question 7

Which primary function is mediated by nicotinic cholinergic receptors?

Accepted Answer

Neurotransmitter release

Answer

Smooth muscle contraction

Answer

Cardiac muscle relaxation

Answer

Glandular secretion

Question 8

Which drug selectively activates α1-adrenoceptors?

Accepted Answer

Phenylephrine

Answer

Isoprenaline

Answer

Salmeterol

Answer

Dobutamine

Question 9

Which therapeutic benefit is associated with the use of β2-adrenoceptor agonists?

Accepted Answer

Relief of asthma symptoms

Answer

Control of hypertension

Answer

Treatment of Parkinson's disease

Answer

Alleviation of depression

Question 10

Which drug exhibits both α- and β-adrenoceptor blocking activity?

Accepted Answer

Carvedilol

Answer

Atenolol

Answer

Salbutamol

Answer

Fenoterol

Question 11

Which potential adverse effect is associated with long-term use of β-adrenoceptor agonists?

Accepted Answer

Tachyphylaxis (reduced responsiveness)

Answer

Bronchospasm

Answer

Hyperglycemia

Answer

Hypotension

Question 12

Which neurotransmitter is released at the postganglionic parasympathetic nerve terminals?

Accepted Answer

Acetylcholine

Answer

Noradrenaline

Answer

Dopamine

Answer

Serotonin

Question 13

Which of the following choices describes a mechanism of action of muscarinic cholinergic antagonists?

Accepted Answer

Competitive antagonism at muscarinic acetylcholine receptors

Answer

Depletion of acetylcholine stores

Answer

Inhibition of acetylcholinesterase

Answer

Stimulation of nicotinic acetylcholine receptors

Question 14

Which of the following represents a centrally acting anticholinergic?

Accepted Answer

Scopolamine

Answer

Tropicamide

Answer

Glycopyrronium

Answer

Ipratropium

Question 15

Which of the following drugs is a muscarinic receptor antagonist commonly used to relieve symptoms of overactive bladder?

Accepted Answer

Oxybutynin

Answer

Pilocarpine

Answer

Propranolol

Answer

Atropine

Question 16

Which of the following receptors mediates the bronchodilatory effects of norepinephrine?

Accepted Answer

β2-adrenoreceptor

Answer

α1-adrenoreceptor

Answer

Dopamine receptor

Answer

Muscarinic receptor

Question 17

Which of the following drugs is a selective dopamine agonist primarily used in the treatment of Parkinson's disease?

Accepted Answer

Pramipexole

Answer

Oxybutynin

Answer

Propranolol

Answer

Haloperidol

Question 18

Hypertension is a common adverse effect associated with the activation of which of the following receptor subtypes?

Accepted Answer

α1-adrenoreceptor

Answer

Diarrhea

Answer

Bradycardia

Answer

Bronchospasm

Question 19

Which of the following drugs is a cholinesterase inhibitor commonly used to improve muscle strength in patients with myasthenia gravis?

Accepted Answer

Pyridostigmine

Answer

Pramipexole

Answer

Atropine

Answer

Propranolol

Question 20

Which of the following receptors is responsible for mediating the parasympathetic control over heart rate?

Accepted Answer

Muscarinic receptor

Answer

Nicotinic receptor

Answer

Dopamine receptor

Answer

β-adrenoreceptor

Question 21

Which of the following drugs is a β-blocker commonly used in the treatment of hypertension?

Accepted Answer

Metoprolol

Answer

Dopamine

Answer

Atropine

Question 22

Which of the following is the primary mechanism of action of centrally acting α2-adrenoreceptor agonists?

Accepted Answer

Inhibition of norepinephrine release

Answer

Activation of muscarinic receptors

Answer

Stimulation of β-adrenoreceptors

Answer

Blockade of dopamine receptors

Question 23

Which of the following drugs is an anticholinergic commonly used to prevent motion sickness?

Accepted Answer

Scopolamine

Answer

Metoprolol

Answer

Pramipexole

Answer

Pilocarpine