BIOM 3090 QUIZ QUESTIONS WITH VERIFIED
ANSWERS
Which one of the following statements about autonomic nervous system is false?
a) sympathetic preganglionic neurons release ACh
b) monoamine oxidase breaks down NE
c) stimulation of B2 receptors decreases heart rate
d) activation of M2 receptors in the heart results in decrease in heart rate
e) ACh is synthesized by enzyme choline acetyltransferase - Answers - b) stimulation of
B2 receptors decreases heart rate
Which of the following effects of nicotine would be blocked by trimethaphan but not
atropine?
a) increased GI motility
b) constriction of pupil
c) decreased heart rate
d) increased secretion from sweat glands
e) contraction of vascular smooth muscle in blood vessels supplying organs and skin -
Answers - e) contraction of vascular smooth muscle in blood vessels supplying organs
and skin
Pilocarpine and echothiophate will have significantly different effects on which one of
the following?
a) contraction of sphincter muscle in eye
b) bronchoconstriction
c) skeletal muscle contraction
d) sweat gland secretion
e) GI motility - Answers - c) skeletal muscle contraction
When the seed (a bean) of the Calabar plant is ingested it produces signs of an indirect-
acting cholinomimetic that enters the central nervous system. Which one of the
following is the most likely active ingredient of the Calabar bean?
a) atropine
b) muscarine
c) nicotine
d) trimethaphan
e) physostigmine - Answers - e) physostigmine
Which of the following statements is false?
a) clonidine decreases the rate and force of contraction of the heart
b) albuterol can be used to tread asthma
c) propranolol will decrease intraocular pressure
d) isoproterenol can be used to treat glaucoma
ANSWERS
Which one of the following statements about autonomic nervous system is false?
a) sympathetic preganglionic neurons release ACh
b) monoamine oxidase breaks down NE
c) stimulation of B2 receptors decreases heart rate
d) activation of M2 receptors in the heart results in decrease in heart rate
e) ACh is synthesized by enzyme choline acetyltransferase - Answers - b) stimulation of
B2 receptors decreases heart rate
Which of the following effects of nicotine would be blocked by trimethaphan but not
atropine?
a) increased GI motility
b) constriction of pupil
c) decreased heart rate
d) increased secretion from sweat glands
e) contraction of vascular smooth muscle in blood vessels supplying organs and skin -
Answers - e) contraction of vascular smooth muscle in blood vessels supplying organs
and skin
Pilocarpine and echothiophate will have significantly different effects on which one of
the following?
a) contraction of sphincter muscle in eye
b) bronchoconstriction
c) skeletal muscle contraction
d) sweat gland secretion
e) GI motility - Answers - c) skeletal muscle contraction
When the seed (a bean) of the Calabar plant is ingested it produces signs of an indirect-
acting cholinomimetic that enters the central nervous system. Which one of the
following is the most likely active ingredient of the Calabar bean?
a) atropine
b) muscarine
c) nicotine
d) trimethaphan
e) physostigmine - Answers - e) physostigmine
Which of the following statements is false?
a) clonidine decreases the rate and force of contraction of the heart
b) albuterol can be used to tread asthma
c) propranolol will decrease intraocular pressure
d) isoproterenol can be used to treat glaucoma
