An antagonist is a substance that:

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Pharmacology of Cardiovascular Drugs Questions

Question 1 of 5

An antagonist is a substance that:

A. Binds to the receptors and initiates changes in cell function, producing maximal effect B. Binds to the receptors and initiates changes in cell function, producing submaximal effect C. Interacts with plasma proteins and doesn’t produce any effect D. Binds to the receptors without directly altering their functions

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

Which of the following cholinomimetics is commonly used in the treatment of glaucoma?

A. Pilocarpine B. Lobeline C. Acethylcholine D. Neostigmine

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

Nondepolarisation neuromuscular blocking agents:

A. Block acetylcholine reuptake B. Prevent access of the transmitter to its receptor and depolarization C. Block transmission by an excess of a depolarizing agonist D. All of the above

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

Indicate the beta1-selective agonist:

A. Isoproterenol B. Dobutamine C. Metaproterenol D. Epinephrine

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

Compared with phentolamine prazosin has all of the following features EXCEPT:

A. Irreversible blockade of alfa receptors B. Highly selective for alfa1 receptors C. The relative absence of tachycardia D. Persistent block of alfa1 receptors

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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