PSY 300 EXAM 1QUESTIONS WITH CORRECT
ANSWERS
whether the voltage in the postsynaptic cell is more positive (moved closer to the threshold for an
action potential) or whether it is more negative - ✔✔Whether we say a neurotransmitter is
excitatory or inhibitory depends on
morphine - ✔✔Which of the following is a pure compound derived from poppies?
lingand-gated channels - ✔✔Channels that open when they come in contact with specific
chemicals are known as
axons - ✔✔Electrical pulses produced by neurons travel along specialized extensions called
ecstasy - ✔✔What drug selectively kills Serotonin (5-HT) neurons and can lead to long-lasting
changes in mood and sleep?
false - ✔✔Any given neuron in your brain is connected to five or fewer other neurons.
receptor - ✔✔Direct antagonists are drugs that dampen or block normal ______ function.
true - ✔✔There are many different types of neurons, but all of them receive and send
information.
spines - ✔✔Knobs located on the dendrites that provide additional locations for synapses are
known as dendritic
mitochondria and synaptic vesicles - ✔✔Which of the following structures are typically found
within the axon (presynaptic) terminal?
positive - ✔✔When a neuron is depolarized, its voltage becomes
psychoactive - ✔✔If a drug prevents the reuptake of a neurotransmitter, that drug could be
classified as a/an _____ drug
synaptic cleft - ✔✔There is a small space between the pre- and postsynaptic that allows the
neurotransmitter concentration to rise and decay rapidly. This space is called the
catecholamines - ✔✔Dopamine, epinephrine, and norepinephrine are all classified as
excitatory postsynaptic potential (EPSP) - ✔✔If the inside of a neuron is flooded with positively
charged sodium ions, there would be a/an
, spatial summation - ✔✔Integration of inputs from many synapses on the postsynaptic neuron is
known as
nerve - ✔✔A group of axons traveling together within the peripherial nervous system is called a
reuptake - ✔✔After neurotransmitters have done their job, they are cleaned up, either by
degradation, diffusion, or _________
action of transmitter molecules on receptor proteins - ✔✔The "lock-and-key" analogy relates to
the
botulin toxin - ✔✔What drug that blocks blocks release of acetylecholine is used for cosmetic
purposes to remove facial wrinkles?
release of neurotransmitters - ✔✔The greater the influx of calcium into the presynaptic axon
terminal, the greater the
electrical force - ✔✔The tendency for molecules with like signs to move apart and molecules
with opposite signs to move together is known as
true - ✔✔Neurons are the building blocks of the nervous system
releasing chemicals into the spaces between cells - ✔✔The axon terminals (presynaptic boutons)
are responsible for
reuptake - ✔✔When chemical communication at a synapse is terminated by the recapture of
neurotransmitter molecules by the presynaptic neuron, we refer to the process as ______
The potassium channels open, and positively charged potassium ions flow to the outside of the
cell - ✔✔What happens to a neuron after the inside is flooded with positively charged sodium
ions?
receive incoming signals from other neurons - ✔✔The function of dendrites is to
all or none - ✔✔Similar to communication in modern computers, action potentials in neurons are
synaptic vesicles - ✔✔Chemical messengers in the axon terminal called neurotransmitters are
contained within _____
the membrane voltage at which the concentration gradient and electrostatic forces are at balance
(usually a negative value between -70 and -40 millivolts (mV) - ✔✔The resting membrane
potential is
true - ✔✔The release of neurotransmitters allows neurons to communicate with each other
ANSWERS
whether the voltage in the postsynaptic cell is more positive (moved closer to the threshold for an
action potential) or whether it is more negative - ✔✔Whether we say a neurotransmitter is
excitatory or inhibitory depends on
morphine - ✔✔Which of the following is a pure compound derived from poppies?
lingand-gated channels - ✔✔Channels that open when they come in contact with specific
chemicals are known as
axons - ✔✔Electrical pulses produced by neurons travel along specialized extensions called
ecstasy - ✔✔What drug selectively kills Serotonin (5-HT) neurons and can lead to long-lasting
changes in mood and sleep?
false - ✔✔Any given neuron in your brain is connected to five or fewer other neurons.
receptor - ✔✔Direct antagonists are drugs that dampen or block normal ______ function.
true - ✔✔There are many different types of neurons, but all of them receive and send
information.
spines - ✔✔Knobs located on the dendrites that provide additional locations for synapses are
known as dendritic
mitochondria and synaptic vesicles - ✔✔Which of the following structures are typically found
within the axon (presynaptic) terminal?
positive - ✔✔When a neuron is depolarized, its voltage becomes
psychoactive - ✔✔If a drug prevents the reuptake of a neurotransmitter, that drug could be
classified as a/an _____ drug
synaptic cleft - ✔✔There is a small space between the pre- and postsynaptic that allows the
neurotransmitter concentration to rise and decay rapidly. This space is called the
catecholamines - ✔✔Dopamine, epinephrine, and norepinephrine are all classified as
excitatory postsynaptic potential (EPSP) - ✔✔If the inside of a neuron is flooded with positively
charged sodium ions, there would be a/an
, spatial summation - ✔✔Integration of inputs from many synapses on the postsynaptic neuron is
known as
nerve - ✔✔A group of axons traveling together within the peripherial nervous system is called a
reuptake - ✔✔After neurotransmitters have done their job, they are cleaned up, either by
degradation, diffusion, or _________
action of transmitter molecules on receptor proteins - ✔✔The "lock-and-key" analogy relates to
the
botulin toxin - ✔✔What drug that blocks blocks release of acetylecholine is used for cosmetic
purposes to remove facial wrinkles?
release of neurotransmitters - ✔✔The greater the influx of calcium into the presynaptic axon
terminal, the greater the
electrical force - ✔✔The tendency for molecules with like signs to move apart and molecules
with opposite signs to move together is known as
true - ✔✔Neurons are the building blocks of the nervous system
releasing chemicals into the spaces between cells - ✔✔The axon terminals (presynaptic boutons)
are responsible for
reuptake - ✔✔When chemical communication at a synapse is terminated by the recapture of
neurotransmitter molecules by the presynaptic neuron, we refer to the process as ______
The potassium channels open, and positively charged potassium ions flow to the outside of the
cell - ✔✔What happens to a neuron after the inside is flooded with positively charged sodium
ions?
receive incoming signals from other neurons - ✔✔The function of dendrites is to
all or none - ✔✔Similar to communication in modern computers, action potentials in neurons are
synaptic vesicles - ✔✔Chemical messengers in the axon terminal called neurotransmitters are
contained within _____
the membrane voltage at which the concentration gradient and electrostatic forces are at balance
(usually a negative value between -70 and -40 millivolts (mV) - ✔✔The resting membrane
potential is
true - ✔✔The release of neurotransmitters allows neurons to communicate with each other
