MSN 671 Final Exam Questions
and Answers 100% Pass
Communication between all human CNS neurons at the synapses is: - CORRECT
ANSWER-Chemical
When neurotransmission occurs without a synapse, what is it called? - CORRECT
ANSWER-Volume neurotransmission
Which is an example of a neurotransmitter produced specifically as a retrograde
neurotransmitter? - CORRECT ANSWER-Nitric oxide
Which is an example of a volume neurotransmission? - CORRECT ANSWER-
Dopamine in the prefrontal cortex
In a G protein-linked signal transduction cascade, where is the second messenger
synthesized? - CORRECT ANSWER-Intracellularly
Which type of pump supplies the energy for the transport of monoamines? -
CORRECT ANSWER-Sodium pump
A partial agonist has what effect on neurotransmission? - CORRECT ANSWER-
Net agonism when neurotransmission is deficient, net antagonism when
neurotransmission is excessive
, Which is true regarding inverse agonists? - CORRECT ANSWER-Their action is
thought to produce a conformational change in the G-protein-linked receptor that
stabilizes it in an inactive form, producing a reduction in signal transduction
Which of the following block the actions of everything in the agonist spectrum? -
CORRECT ANSWER-Antagonists
What regulates the opening of ligand-gated ion channels? - CORRECT ANSWER-
Neurotransmitters
What regulates the opening of voltage-gated ion channels? - CORRECT
ANSWER-The charge across the membrane
What happens to an ion channel when both a neurotransmitter and positive
allosteric modulator bind to a receptor? - CORRECT ANSWER-The channel
opens much more frequently, allowing more ions into the cell
What impact do agonists have on ligand-gated ion channels? - CORRECT
ANSWER-They cause ligand-gated ion channels to open more frequently
The known receptor sites for ligand-gated ion channels are: - CORRECT
ANSWER-Both inside and outside the channel
When voltage-sensitive sodium channels are open and activated, the flow of
sodium is: - CORRECT ANSWER-Into the neuron
The activation of N-methyl-d-aspartate (NMDA) receptors require the presence
of: - CORRECT ANSWER-Glutamate and glycine
COPYRIGHT ALL RIGHTS RESERVED ©️ 2025
and Answers 100% Pass
Communication between all human CNS neurons at the synapses is: - CORRECT
ANSWER-Chemical
When neurotransmission occurs without a synapse, what is it called? - CORRECT
ANSWER-Volume neurotransmission
Which is an example of a neurotransmitter produced specifically as a retrograde
neurotransmitter? - CORRECT ANSWER-Nitric oxide
Which is an example of a volume neurotransmission? - CORRECT ANSWER-
Dopamine in the prefrontal cortex
In a G protein-linked signal transduction cascade, where is the second messenger
synthesized? - CORRECT ANSWER-Intracellularly
Which type of pump supplies the energy for the transport of monoamines? -
CORRECT ANSWER-Sodium pump
A partial agonist has what effect on neurotransmission? - CORRECT ANSWER-
Net agonism when neurotransmission is deficient, net antagonism when
neurotransmission is excessive
, Which is true regarding inverse agonists? - CORRECT ANSWER-Their action is
thought to produce a conformational change in the G-protein-linked receptor that
stabilizes it in an inactive form, producing a reduction in signal transduction
Which of the following block the actions of everything in the agonist spectrum? -
CORRECT ANSWER-Antagonists
What regulates the opening of ligand-gated ion channels? - CORRECT ANSWER-
Neurotransmitters
What regulates the opening of voltage-gated ion channels? - CORRECT
ANSWER-The charge across the membrane
What happens to an ion channel when both a neurotransmitter and positive
allosteric modulator bind to a receptor? - CORRECT ANSWER-The channel
opens much more frequently, allowing more ions into the cell
What impact do agonists have on ligand-gated ion channels? - CORRECT
ANSWER-They cause ligand-gated ion channels to open more frequently
The known receptor sites for ligand-gated ion channels are: - CORRECT
ANSWER-Both inside and outside the channel
When voltage-sensitive sodium channels are open and activated, the flow of
sodium is: - CORRECT ANSWER-Into the neuron
The activation of N-methyl-d-aspartate (NMDA) receptors require the presence
of: - CORRECT ANSWER-Glutamate and glycine
COPYRIGHT ALL RIGHTS RESERVED ©️ 2025
