UMKC SOP Quiz 6 (Intro to Pharmacy Profession and Degree Program) Questions With Complete
Solutions
A change in the membrane potential of a neuron from a value of -70mV to a value of -60mV would be
called:
A. Deploarization
B. Hyper-polarization
C. Action Potential
D. Refractory Period - (ANSWER)A. Deploarization
48.2. Which of the following statements concerning
the propagation of action potentials is incorrect?
A. Saltatory conduction occurs in myelinated axons.
B. During conduction of an action potential, current flows from the active area of
the membrane to the adjacent inactive area, thereby bringing the inactive area to
threshold
C. For fibers of equal diameter, action potential propagation is faster in myelinated
fibers than in unmyelinated ones.
D. Action potential propagation is faster in large-diameter fibers than in small-
diameter ones.
E. Strong stimuli generate stronger action potentials than weaker stimuli. - (ANSWER)E. Strong stimuli
generate stronger action potentials than weaker stimuli.
In a neuron, resting potential is maintained by maintaining a gradient of:
A. Potassium ions
B. Sodium ions
C. Both - (ANSWER)C. Both
48.4 Which of the following is a direct result of
depolarizing the presynaptic membrane of an
axon terminal?
A. Voltage-gated calcium channels in the membrane open.
, UMKC SOP Quiz 6 (Intro to Pharmacy Profession and Degree Program) Questions With Complete
Solutions
B. Synaptic vesicles fuse with the membrane.
C. The postsynaptic cell produces an action potential.
D. The postsynaptic cell membrane becomes hyperpolarized.
E. Ligand-gated channels open, allowing neurotransmitters to
enter the synaptic cleft. - (ANSWER)A. Voltage-gated calcium channels in the membrane open.
48.5. Assume that a single IPSP has a negative magnitude of - 0.5 mV at theaxon hillock, and that a single
EPSP has a positive magnitude of + 0.5 mV.For a neuron with an initial membrane potential of -70 mV,
the net effect of the simultaneous arrival of 2 IPSPs and 6 EPSPs would be to move the membrane
potential to:
A-72 mV
B. -71 mV
C. -70 mV
D. +69 mV
E. 68 mV - (ANSWER)E. 68 mV
49.1. Which of the following activities would be
associated with the parasympathetic division of
the nervous system?
A. rest and digestion
B. release of epinephrine
C. increased metabolic rate
D. fight-or-flight response
E. conversion of glycogen to glucose - (ANSWER)A. rest and digestion
49.2. Which of the following structures or regions is incorrectly paired with its function?
A. limbic system - motor control of speech.
B. medulla oblongata - control centers for involuntary functions.
C. cerebellum - coordination of movement and balance.
D. corpus callosum - communication between the left and right
Solutions
A change in the membrane potential of a neuron from a value of -70mV to a value of -60mV would be
called:
A. Deploarization
B. Hyper-polarization
C. Action Potential
D. Refractory Period - (ANSWER)A. Deploarization
48.2. Which of the following statements concerning
the propagation of action potentials is incorrect?
A. Saltatory conduction occurs in myelinated axons.
B. During conduction of an action potential, current flows from the active area of
the membrane to the adjacent inactive area, thereby bringing the inactive area to
threshold
C. For fibers of equal diameter, action potential propagation is faster in myelinated
fibers than in unmyelinated ones.
D. Action potential propagation is faster in large-diameter fibers than in small-
diameter ones.
E. Strong stimuli generate stronger action potentials than weaker stimuli. - (ANSWER)E. Strong stimuli
generate stronger action potentials than weaker stimuli.
In a neuron, resting potential is maintained by maintaining a gradient of:
A. Potassium ions
B. Sodium ions
C. Both - (ANSWER)C. Both
48.4 Which of the following is a direct result of
depolarizing the presynaptic membrane of an
axon terminal?
A. Voltage-gated calcium channels in the membrane open.
, UMKC SOP Quiz 6 (Intro to Pharmacy Profession and Degree Program) Questions With Complete
Solutions
B. Synaptic vesicles fuse with the membrane.
C. The postsynaptic cell produces an action potential.
D. The postsynaptic cell membrane becomes hyperpolarized.
E. Ligand-gated channels open, allowing neurotransmitters to
enter the synaptic cleft. - (ANSWER)A. Voltage-gated calcium channels in the membrane open.
48.5. Assume that a single IPSP has a negative magnitude of - 0.5 mV at theaxon hillock, and that a single
EPSP has a positive magnitude of + 0.5 mV.For a neuron with an initial membrane potential of -70 mV,
the net effect of the simultaneous arrival of 2 IPSPs and 6 EPSPs would be to move the membrane
potential to:
A-72 mV
B. -71 mV
C. -70 mV
D. +69 mV
E. 68 mV - (ANSWER)E. 68 mV
49.1. Which of the following activities would be
associated with the parasympathetic division of
the nervous system?
A. rest and digestion
B. release of epinephrine
C. increased metabolic rate
D. fight-or-flight response
E. conversion of glycogen to glucose - (ANSWER)A. rest and digestion
49.2. Which of the following structures or regions is incorrectly paired with its function?
A. limbic system - motor control of speech.
B. medulla oblongata - control centers for involuntary functions.
C. cerebellum - coordination of movement and balance.
D. corpus callosum - communication between the left and right
