Pharmacology IV

1

A pharmacologic agonist is a chemical substance that

1

When comparing drugs with respect to intensity of response, the drug that produces the greatest maximum effect is the one with the highest

1

If drug has a greater efficacy than drug B, then drug A

1

A drug with a high LD50 and a low ED50 has a

1

The ratio of the median lethal dose (LD50) to the median effective dose (ED50) is the

1

The therapeutic index of a drug is the ratio of

1

The phenomenon in which two drugs produce opposite effects on a physiologic system but do not act at the same receptor site is

1

Epinephrine antagonizes the effects of histamine by

1

Interaction between nitroglycerin and epinephrine is what type of antagonism?

1

When the combined action of two drugs is greater than the sum of their individual actions, this is

1

Which of the following responses is least predictable in occurrence?

1

Idiosyncrasies to drugs are related to

1

Two drugs, A and B, have the same mechanism of action. Drug A in a dose of 5 mg. produces the same magnitude of response as drug B in a dose of 500 mg. Which of the following statements is correct?

1

According to the theory that agonists and antagonists occupy the same receptor site, an effective antagonist should exhibit

1

All of the following statements are true regarding the occupation theory of drug-receptor interaction EXCEPT:

1

The occupational theory of drug-receptor interaction states that
a. The magnitude of the drug response is proportional to the number of receptors occupied
b. A partial agonist has intrinsic activity but no affinity for the receptor site
c. An antagonist drug has affinity but no intrinsic activity
d. The rate at which the drug-receptor complex associates and dissociates determines drug efficacy
e. The degree of drug action is dependent on the law of mass action

Praxis Tests: Pharmacology Quiz sobre Pharmacology IV, criado por ACAPUN INSTITUTE em 08-11-2021.

Pharmacology IV

A pharmacologic agonist is a chemical substance that

When comparing drugs with respect to intensity of response, the drug that produces the greatest maximum effect is the one with the highest

If drug has a greater efficacy than drug B, then drug A

A drug with a high LD50 and a low ED50 has a

The ratio of the median lethal dose (LD50) to the median effective dose (ED50) is the

The therapeutic index of a drug is the ratio of

The phenomenon in which two drugs produce opposite effects on a physiologic system but do not act at the same receptor site is

Epinephrine antagonizes the effects of histamine by

Interaction between nitroglycerin and epinephrine is what type of antagonism?

When the combined action of two drugs is greater than the sum of their individual actions, this is

Which of the following responses is least predictable in occurrence?

Idiosyncrasies to drugs are related to

Two drugs, A and B, have the same mechanism of action. Drug A in a dose of 5 mg. produces the same magnitude of response as drug B in a dose of 500 mg. Which of the following statements is correct?

According to the theory that agonists and antagonists occupy the same receptor site, an effective antagonist should exhibit

All of the following statements are true regarding the occupation theory of drug-receptor interaction EXCEPT: