Administration of Drug X alone causes an increase in blood pressure but in someone
pretreated with phenoxybenzamine, no change in blood pressure occurs. Drug X is
probably a drug similar to?
A) Acetylcholine
B) Norepinephrine
C) Phenylephrine
D) Nicotine
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C) Phenylephrine
The most potent drug is always the most efficacious.
A) True
,B) False
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B) False
A competitive antagonist:
A) increases the potency and efficacy of an agonist
B) reduces the potency and efficacy of an agonist
C) increases the efficacy of an agonist, without affecting the potency
D) reduces the potency of an agonist, without affecting the efficacy
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D) reduces the potency of an agonist, without affecting the efficacy
Which one of the following is an expected effect of a therapeutic dose of
pilocarpine?
A) Decreased DAG in intestinal smooth muscle
B) Decreased EDRF release from endothelial cells that line blood vessels
C) Increased cAMP in cells of the salivary gland
D) Decreased cAMP in cardiac muscle
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D) Decreased cAMP in cardiac muscle
,Which one of the following statements is TRUE?
A) Echothiophate is a direct agonist at nicotinic receptors
B) Phenylephrine will dilate the pupil and increase blood pressure
C) Butoxamine can be used to treat hypertension
D) Clonidine administration will dilate blood vessels and increase heart rate
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Phenylephrine
Administration of drug X alone causes an increased in blood pressure but in someone
pretreated with propranolol no change in blood pressure occurs. Drug X is probably
a drug similar to?
A) Dobutamine
B) Atropine
C) Muscarine
D) Pilocarpine
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A) Dobutamine
Which of the following effects of nicotine would be blocked by trimethaphan but not
atropine?
A) Constriction of the pupil
B) Decreased gastrointestinal motility
C) Bronchoconstriction
, D) Contraction of vascular smooth muscle in blood vessels supplying the organs and
skin
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d???
Drug X is a weak acid with a pKa of 4. In an environment with a pH of 2 the ratio of
ionized to un-ionized drug molecules (ionized:un-ionized) will be:
A) 100:1
B) 10:1
C) 1:10
D) 1:100
E) 1:1,000
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D) 1:100
Isoproterenol will ________________ heart rate and a drug that can block this action is
_____________
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increase, propranolol
Administration of Drug X alone causes an increase in blood pressure but in someone
pretreated with metoprolol no change in blood pressure occurs. Drug X is probably a
pretreated with phenoxybenzamine, no change in blood pressure occurs. Drug X is
probably a drug similar to?
A) Acetylcholine
B) Norepinephrine
C) Phenylephrine
D) Nicotine
Give this one a try later!
C) Phenylephrine
The most potent drug is always the most efficacious.
A) True
,B) False
Give this one a try later!
B) False
A competitive antagonist:
A) increases the potency and efficacy of an agonist
B) reduces the potency and efficacy of an agonist
C) increases the efficacy of an agonist, without affecting the potency
D) reduces the potency of an agonist, without affecting the efficacy
Give this one a try later!
D) reduces the potency of an agonist, without affecting the efficacy
Which one of the following is an expected effect of a therapeutic dose of
pilocarpine?
A) Decreased DAG in intestinal smooth muscle
B) Decreased EDRF release from endothelial cells that line blood vessels
C) Increased cAMP in cells of the salivary gland
D) Decreased cAMP in cardiac muscle
Give this one a try later!
D) Decreased cAMP in cardiac muscle
,Which one of the following statements is TRUE?
A) Echothiophate is a direct agonist at nicotinic receptors
B) Phenylephrine will dilate the pupil and increase blood pressure
C) Butoxamine can be used to treat hypertension
D) Clonidine administration will dilate blood vessels and increase heart rate
Give this one a try later!
Phenylephrine
Administration of drug X alone causes an increased in blood pressure but in someone
pretreated with propranolol no change in blood pressure occurs. Drug X is probably
a drug similar to?
A) Dobutamine
B) Atropine
C) Muscarine
D) Pilocarpine
Give this one a try later!
A) Dobutamine
Which of the following effects of nicotine would be blocked by trimethaphan but not
atropine?
A) Constriction of the pupil
B) Decreased gastrointestinal motility
C) Bronchoconstriction
, D) Contraction of vascular smooth muscle in blood vessels supplying the organs and
skin
Give this one a try later!
d???
Drug X is a weak acid with a pKa of 4. In an environment with a pH of 2 the ratio of
ionized to un-ionized drug molecules (ionized:un-ionized) will be:
A) 100:1
B) 10:1
C) 1:10
D) 1:100
E) 1:1,000
Give this one a try later!
D) 1:100
Isoproterenol will ________________ heart rate and a drug that can block this action is
_____________
Give this one a try later!
increase, propranolol
Administration of Drug X alone causes an increase in blood pressure but in someone
pretreated with metoprolol no change in blood pressure occurs. Drug X is probably a
